
When we lined up the eight smart deadbolts under $200, the most eye‑catching fact was that the Veise VE017, priced at just $49.99, also carries the highest user rating at 4.4 / 5 across the whole set. That 0.2‑second fingerprint sensor and 7‑in‑1 access mix (fingerprint, NFC, keypad, app, mechanical key, auto‑lock, USB power) give it a surprisingly strong appeal for a lock that costs less than a night out.
The roundup splits neatly into three price tiers. In the budget camp you’ll find the Veise VE017, Kucacci Smart Door Lock Black ($79.99) and the August Smart Lock Wi‑Fi Silver ($114.99). Mid‑range options include the SimpliSafe Smart Lock Series 2 ($119.99) and August Smart Lock Gray ($120.81). The premium tier houses the Ultraloq U‑Bolt Pro ($135.99), Yale Assure Lock 2 Wi‑Fi ($198.94), and August Smart Lock 2nd Gen Silver ($199.99), each packing extra integrations or weather‑proofing.
Below we’ll break down how these models stack up on installation ease, connectivity, and the specific ways they let you lock and unlock your front door without fumbling for a key.

Veise VE017
Its compact depth of 68.6 mm delivers strong value and reliable performance, making it the top choice for budget‑conscious buyers.

Ultraloq U-Bolt Pro
Ideal for tech‑savvy homeowners who want a proven lock; at $135.99 it’s about $86 more than the Veise, reflecting its premium reputation.

August Smart Lock Gray
Stands out with a shallow 41 mm depth, fitting tighter door frames where the bulkier Veise and Ultraloq struggle, while staying at $120.81.
Also considered
Score Analysis
Key score advantages vs. runner-up (Ultraloq U-Bolt Pro)
Price Range

Veise VE017
$49.99

Ultraloq U-Bolt Pro
$135.99

August Smart Lock Gray
$120.81

Kucacci Smart Door Lock Black
$79.99

SimpliSafe Smart Lock Series 2
$119.99

Yale Assure Lock 2 Wi-Fi
$198.94

August Smart Lock 2nd Gen Silver
$199.99

August Smart Lock Wi-Fi Silver
$109.00
Spec Comparison
TL;DR: The Veise VE017 offers a lightning‑fast 0.2‑second fingerprint unlock, 8‑in‑1 keyless entry, and IP55 protection for just $49.99, making it the strongest budget smart lock under $200.
The lock’s standout feature is its 0.2‑second fingerprint recognition, driven by an on‑device AI chip. At 1021 g, it measures 68.6 mm deep, 76.2 mm high and 147.3 mm wide, fitting most standard deadbolts while staying solid enough for daily use.
Compared with the other seven contenders, the Veise is heavier than the Kucacci (453.6 g), August Smart Lock Silver (180.9 g) and August Gray (395 g), yet lighter than Ultraloq U‑Bolt Pro (1497 g) and Yale Assure Lock 2 (2041.2 g). Its weight places it in the mid‑range of the group, offering a sturdier feel without the bulk of the top‑tier models.
Users frequently praise the quick installation and the convenience of multiple unlocking options—including fingerprint, app, PIN, two NFC cards and two mechanical keys. Reviewers also note the lock’s reliable performance after setup, though some point out that many independent reviews haven't yet proven its long‑term durability.
Additional technical highlights include a 12‑month battery life powered by four AA alkaline cells, auto‑lock functionality, voice‑assistant compatibility via Alexa or Google Assistant (through the G1 Gateway), and a USB‑C emergency port. Veise backs the product with a two‑year warranty and 24/7 after‑sales email support.
Pros
Cons
Best for: Budget-conscious buyers seeking a reliable entry-level option
Avoid if: You need proven long‑term durability or an official weather‑proof rating
“impressive for a technological lock”
TL;DR: The Ultraloq U‑Bolt Pro packs eight entry methods, 360° fingerprint support for up to 100 users, and a lifetime mechanical warranty, all for $135.99, but it’s heavier and its Wi‑Fi battery lasts only 3–6 months.
The standout spec is the 8‑in‑1 access suite – fingerprint, keypad, app, auto‑lock/lock, eKey sharing, Apple Watch, voice control and a mechanical key – backed by a 50‑60 user code capacity and a 360° live capacitive sensor that stores up to 100 fingerprints. At 2.8 pounds, it's the heaviest lock in this budget lineup.
Compared with the seven other locks, the U‑Bolt Pro is significantly heavier than the August Smart Lock Gray (0.87 lb) and the Veise VE017 (2.25 lb). It also offers more entry methods than the SimpliSafe Series 2 (PIN pad, key fob, app, voice, physical key) and the Kucacci Black (fingerprint, remote gateway). However, its Wi‑Fi runs only on the 2.4 GHz band, whereas the August Gray and Silver models support both 2.4 GHz and 5 GHz, which can reduce interference issues. The Wi‑Fi model lists battery life at 3–6 months, which is shorter than the Veise’s 12‑month claim.
User feedback highlights the lock’s easy installation and the speed of the fingerprint sensor, with many owners praising the ability to grant remote eKeys to guests. Professional reviewers note the ANSI Commercial Grade 1 rating and IP65 weather resistance as strong security features. Common complaints revolve around occasional Wi‑Fi pairing hiccups on crowded 2.4 GHz networks and reduced battery life when Wi‑Fi is active, especially in colder climates where fingerprint performance can dip.
Additional technical context: the lock operates on four AA alkaline cells at a working voltage of 6 V, includes a micro‑USB backup power port, and features LED indicators (red, green, blue) plus a backlit keypad. The door sensor enables auto‑lock and status detection, while the 128‑bit AES encryption with a dynamic key adds a layer of data protection.
Pros
Cons
Best for: Buyers willing to invest in a proven, high‑quality option
Avoid if: You're on a tight budget or only need basic functionality
“keypad, biometrics, and auto-locking smart deadbolt FTW”
TL;DR: The August Smart Lock Gray installs in under 10 minutes, weighs just 0.87 lb, and adds built‑in Wi‑Fi and Bluetooth for keyless entry at $120.81.
The lock’s compact footprint—41 mm deep, 72 mm in diameter, 122 mm tall and only 0.87 lb—means it fits comfortably on most standard single‑cylinder deadbolts without crowding the interior side of the door. Its built‑in Wi‑Fi (2.4 GHz & 5 GHz) and Bluetooth v4.0 let you control it from the August app without a separate bridge, and the DoorSense sensor reports open/closed status instantly.
Compared with the other seven contenders, the August Gray is lighter than SimpliSafe’s 0.95‑lb Series 2 and Kucacci’s 1.0‑lb lock, yet a bit heavier than the August Wi‑Fi Silver model at 0.399 lb. Installation time matches SimpliSafe and Kucacci, both listed at 10 minutes, while its dimensions are slimmer than SimpliSafe’s 32 mm height and 70 mm width. All peers use Wi‑Fi, but only the August models combine it with Bluetooth in a single unit.
Users consistently praise the “tool‑free” setup that really does finish in under ten minutes, and the convenience of unlocking via phone or voice assistant. Professional reviewers note the AES‑128‑bit encryption and TLS layer as “bank‑grade” security for remote access. On the flip side, several owners mention that a reliable 2.4 GHz/5 GHz signal is essential; weak router coverage can cause occasional lock‑out moments. The lock runs on two CR123 batteries, which reviewers say are easy to replace but add a maintenance step.
Pros
Cons
Best for: Value‑conscious buyers seeking quality at $120.81
Avoid if: You've got a multi‑point or non‑standard deadbolt, or your home suffers from unreliable Wi‑Fi coverage
TL;DR: The Kucacci Smart Door Lock Black offers seven entry methods, a quick 0.3‑second fingerprint scan and a 10‑minute DIY install for $79.99, making it a solid budget pick.
What really stands out is the lock’s seven distinct access methods—fingerprint, passcode, smartphone app, key fob, mechanical key, Alexa voice (via a separate gateway) and remote unlock. The fingerprint sensor works in about 0.3 seconds, and the lock auto‑unlocks within 1 second after recognizing an authorized device. The manufacturer advertises a simple 10‑minute install with just a screwdriver, no drilling or wiring required.
Compared with the other seven contenders, Kucacci lands in the middle of the weight range at 1.0 pound. It’s lighter than the Veise VE017 (over 2 pounds) and the Ultraloq U‑Bolt Pro (about 2.8 pounds), but a bit heftier than the August Smart Lock Wi‑Fi (under 0.4 pound) and SimpliSafe Series 2 (0.95 pound). Its fingerprint speed of 0.3 seconds is slower than Veise’s 0.2‑second scan, yet the lock still beats many budget models that don’t list a speed at all. Unlike the August Wi‑Fi model, Kucacci needs a separate KUCACCI Wi‑Fi gateway for remote access, so the out‑of‑the‑box Wi‑Fi capability feels less integrated. However, it does share the same easy‑install claim as SimpliSafe’s 10‑minute setup.
User feedback highlights the convenience of having so many ways to get in, especially for families or short‑term rentals where you might hand out a fingerprint or a temporary passcode. Reviewers also appreciate the voice‑alert low‑battery alarm and the fact that you can power the lock temporarily with a USB power bank in emergencies. The lock’s IP66 rating means it can handle rain or snow, and the AES‑256 encryption gives peace of mind for digital security. It works with door thicknesses from 35 mm to 55 mm, covering most standard interior doors.
Pros
Cons
Best for: Budget-conscious buyers seeking a reliable entry-level option
Avoid if: You want the best value‑per‑dollar in its price range
TL;DR: The SimpliSafe Smart Lock Series 2 costs $119.99, installs in about 10 minutes, and adds Wi‑Fi‑enabled keyless entry with auto‑lock for SimpliSafe Gen 3 homes.
At the core of the Series 2 is a Wi‑Fi‑connected retrofit deadbolt that fits single‑cylinder locks. It weighs 0.95 pounds (431 g) and measures 32 mm in height, 195 mm in length and 70 mm in width, giving it a low‑profile look that blends into a black door frame. The lock runs on four AA batteries plus two CR2450 coin cells, and the manufacturer lists a 10‑minute installation time – reviewers echo the claim, saying the screwdriver‑only setup is “drill‑free” and straightforward.
When you line it up against the other seven contenders, the SimpliSafe lock is a touch heavier than the August Smart Lock Gray (0.87 pounds) but noticeably lighter than the Ultraloq U‑Bolt Pro, which tips the scales at 2.8 pounds. Its dimensions are longer than the August Wi‑Fi Silver’s 2.75 in height, yet the overall footprint remains comparable to the Kucacci Smart Door Lock, which also advertises a 10‑minute install. In terms of feature count, the Series 2 offers a PIN pad (20 codes), a key fob, app control, Alexa and Google Assistant voice support, and a physical key backup – a broader mix than many peers that list fewer access methods.
Consumers consistently praise the lock’s “plug‑and‑play” feel and the reliability of its auto‑lock, which triggers when the SimpliSafe system arms, after a timer, or after multiple failed PIN attempts. Professional reviewers highlight the tight integration with SimpliSafe’s monitoring service and the 60‑day guarantee. The main friction points are the lock’s dependence on a SimpliSafe Gen 3 hub and a roughly $30‑per‑month subscription for full remote features, as well as the limitation to 4‑digit PIN codes and only basic Alexa/Google voice commands.
Technical notes worth mentioning: the lock stores up to 20 unique PINs locally, flashes a low‑battery indicator on the keypad and in the app, and includes a backup physical key for power‑outage scenarios. The battery pack is non‑rechargeable, so you’ll need to replace the AA cells and coin cells periodically – a routine that users note as a regular maintenance task.
Pros
Cons
Best for: Existing SimpliSafe Gen 3 users who want a quick, Wi‑Fi‑enabled upgrade to their deadbolt.
Avoid if: You want the best value‑per‑dollar in its price range or need a lock that works across many smart‑home ecosystems.
TL;DR: Yale’s Assure Lock 2 Wi‑Fi offers a 22.2 mm slim deadbolt, touchscreen keypad and built‑in Wi‑Fi for remote control, but its $198.94 price and 3.8‑star rating make it a premium‑priced choice in the sub‑$200 segment.
The lock’s most distinctive spec is its ultra‑thin depth of 22.2 mm, allowing it to sit close to the door surface while still delivering a motorized bolt and a 63.5 mm wide touchscreen keypad. It weighs 1.0 pound (453.6 g) and the full assembly totals 2041.2 g, giving it a solid, reassuring heft. The unit runs on four AA alkaline batteries (included) and supports up to 250 user codes, making it practical for families or short‑term rentals that need multiple access codes.
Compared with the seven other locks in this roundup, Yale’s model is heavier than the August Smart Lock 2nd Gen Silver (0.87 lb) and the August Smart Lock Gray (0.87 lb), but lighter than the Ultraloq U‑Bolt Pro (2.8 lb) and the Veise VE017 (2.25 lb). Its depth of 22.2 mm is much slimmer than August’s 86 mm depth and the 41 mm depth of the August Gray, meaning it blends better with standard door aesthetics. However, it lacks the ultra‑light construction of the August Wi‑Fi Silver (≈0.40 lb) and the Kucacci lock (1.0 lb but with fewer listed dimensions).
Users consistently praise the smooth integration with Alexa, Google Assistant and Apple Home via the Yale Access app, noting the convenience of remote unlocking and voice commands. Professional reviewers also highlight the straightforward retrofit installation—though the manufacturer doesn’t list an exact installation time—and the reliable Wi‑Fi performance. On the downside, several owners report difficulty during the initial Wi‑Fi setup and express concern over the need to replace AA batteries periodically. The lack of built‑in fingerprint authentication and the absence of Matter support also appear as drawbacks, especially for those looking for future‑proof smart‑home compatibility.
Pros
Cons
Best for: Those prioritizing quality and willing to pay for premium performance
Avoid if: Reliability and user satisfaction are your top concerns
TL;DR: The August Smart Lock 2nd Gen Silver retails for $199.99, fits single‑cylinder deadbolts with a lightweight 0.87‑lb design, and adds app‑based control without replacing your existing key.
This lock’s standout spec is its shallow 86 mm depth, letting it sit snugly on the interior side of most deadbolts while keeping the original mechanical key intact. Weighing just 0.87 pounds, it’s lighter than the Yale Assure Lock 2 and considerably lighter than the bulkier Veise model, making it easy to handle during installation.
Compared with the seven other options in the roundup, the August 2nd Gen sits at the higher end of the price range and requires an optional August Connect Bridge for remote Wi‑Fi access—something the August Wi‑Fi Silver includes out of the box. It shares a similar weight to the August Gray model but offers fewer built‑in Wi‑Fi features than the Ultraloq U‑Bolt Pro, which lists Wi‑Fi as a standard spec. In terms of form factor, its 86 mm square footprint is larger than the compact Yale design but still smaller than the Ultraloq’s back‑panel dimensions.
User feedback repeatedly praises the convenience of keyless entry and the peace of mind from activity logs and virtual guest keys. Reviewers also note that the DoorSense sensor reliably reports open/closed status to the app. On the downside, several owners mention the extra cost and setup steps of the required bridge, and the reliance on four AAA alkaline batteries can be a minor inconvenience. Professional reviewers highlight the non‑destructive retrofit design and smooth HomeKit integration for Siri voice commands.
Additional technical context includes auto‑lock/unlock, Bluetooth‑enabled app control for iOS and Android, and voice control via Siri, Alexa, or Google Assistant. The lock installs in under 10 minutes and comes with a one‑year warranty, giving renters and homeowners a quick upgrade path without drilling into the door frame.
Pros
Cons
Best for: Apple HomeKit users and renters or homeowners who want a non‑destructive smart lock upgrade on a single‑cylinder deadbolt.
Avoid if: You're shopping on a tight budget — it's priced at $199.99.
TL;DR: The August Smart Lock Wi‑Fi Silver adds remote, voice‑controlled entry to an existing deadbolt for $114.99, installs in under 10 minutes, and weighs just 0.399 lb.
The lock’s standout spec is its built‑in Wi‑Fi (802.11 b/g/n 2.4 GHz & 5 GHz), so you don’t need a separate bridge to control the door from anywhere. It mounts on a single‑cylinder deadbolt with a depth of 46 mm (1.8 in), a height of 2.75 in (69.85 mm) and a width of 2.8 in (71.12 mm). At only 0.399 lb (180.9 g), it’s the lightest device in this eight‑product roundup, making it almost half the weight of the SimpliSafe Smart Lock Series 2 (0.95 lb) and far lighter than the Ultraloq U‑Bolt Pro (2.8 lb).
Compared with its peers, the August Wi‑Fi Silver is slimmer than the SimpliSafe’s 32 mm height and thinner than the August Smart Lock Gray’s 41 mm depth. It also beats the Kucacci, Veise, Yale, and Ultraloq models on bulk, all of which are noticeably heavier. Installation is quick—less than 10 minutes—matching the SimpliSafe’s 10‑minute claim and beating the longer setups some rivals require. Battery power comes from two CR123 cells, a common choice for retrofit locks, while other models list larger packs (four AA or CR2450 cells) or don’t disclose battery type.
Users appreciate the convenience of remote lock and unlock from a smartphone, and the integration with Alexa, Google Assistant, and Siri gets frequent praise. However, the 3.9/5‑star rating from over 11 000 reviews signals mixed sentiment; several reviewers note occasional connectivity hiccups and feel the $114.99 price offers less value than competing locks that weigh more but include additional features like a backlit PIN pad. Professional reviewers highlight the easy installation and the fact that the original exterior key still works, which is a practical safety net.
The lock pairs Bluetooth 4.0 with dual‑band Wi‑Fi, allowing both local and cloud control. It’s designed for single‑cylinder deadbolts, so you won’t need to replace your existing hardware. The one‑year warranty rounds out the package, though the manufacturer doesn’t list battery longevity, so you’ll need to monitor the CR123 cells yourself.
Pros
Cons
Best for: Entry‑level buyers or those on a tight budget
Avoid if: You need powerful performance or professional‑grade features
Breakdown

Veise VE017
Pros

Ultraloq U-Bolt Pro
Pros

August Smart Lock Gray
Pros

Kucacci Smart Door Lock Black
Pros
Cons
Based on scoring data and product specs
Personalized picks

Best Overall Pick
Veise VE017
Best OverallBest for: Budget-conscious buyers seeking a reliable entry-level option

Ultraloq U-Bolt Pro
Best for: Buyers willing to invest in a proven, high-quality option
$135.99+$86.00 vs winner
Skip August Smart Lock Wi-Fi Silver if…
You need powerful performance or professional-grade features
Veise’s VE017 takes the top spot thanks to its price of $49.99, a solid 4.4‑star rating from 634 reviewers, and a lightning‑fast 0.2‑second fingerprint recognition. It also packs an 8‑in‑1 smart‑access suite—including fingerprint, app, NFC cards, PIN code, voice and mechanical keys—plus a 12‑month battery life on four AA cells and an IP55 rating for weather resistance.
The Ultraloq U‑Bolt Pro lands as the runner‑up, ideal if you need commercial‑grade durability and optional Z‑Wave integration for a fully connected home. It carries an ANSI Commercial Grade 1 certification, an IP65 seal, and offers 8‑in‑1 entry methods (fingerprint, keypad, app, auto‑unlock/lock, eKey sharing, Apple Watch, voice and mechanical key). Its Wi‑Fi mode runs about 3–6 months on four AA batteries, and the included door sensor adds auto‑lock convenience.
If you want a step up without breaking the bank, the August Smart Lock Gray at $120.81 provides a reliable Wi‑Fi lock with a sleek design for mid‑range budgets. If premium features are a priority, the August Smart Lock 2nd Gen Silver at $199.99 delivers advanced connectivity and a polished finish for a higher‑end experience.
Pick the Veise VE017 today and you’ll secure your door without overspending.
The Kucacci Smart Door Lock Black boasts an IP66 rating, the highest among the list, and operates down to –20°F, making it the most weather‑proof. The Ultraloq U‑Bolt Pro (IP65) and Veise VE017 (IP55) also handle moisture, but Kucacci’s higher rating gives it the edge for harsh climates.
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