Comparison

Bold Smart Lock vs RentSlam

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bold Smart Lock

Transform your smartphone into a digital key for seamless entry and exit. Grant temporary or permanent access to guests, family, or service providers with customizable virtual keys. Enjoy enhanced security and a simplified daily routine.

Highlights
  • Smartphone as a digital key
  • Automatic door unlocking/locking
  • Virtual key sharing
  • Customizable access permissions
  • High-level security
  • Easy cylinder replacement
Features
Read full description

With Bold, your smartphone is your key. Enter and leave your house with your phone in your pocket; Bold will (auto) unlock and lock your door as you come and go. Having guests over? Share virtual keys with whomever, whenever. Invite people with the Bold app and activate or deactivate their virtual key. You are the digital key master: give your spouse permanent access, let the plumber in Monday morning and the cleaning lady every Friday afternoon. You decide! With the highest level of security (think of digital banking-security), your house is safer than ever before. By just replacing the cylinder, burglars will be unable to enter your house using the common techniques. Bold's simple and elegant design makes your front door look better, your house safer and your life easier.

About

RentSlam

Find rental properties faster by setting up custom search profiles. Receive instant alerts via email, WhatsApp, Telegram, or push notifications when new listings match your criteria. This service helps you react quickly to secure your ideal home.

Highlights
  • Customizable search profiles
  • Instant property alerts
  • Multi-platform notifications (email, WhatsApp, Telegram, push)
  • Scans over 1,000 rental sites
  • Supports Netherlands and Germany
  • Helped over 40,000 users
Features
Read full description

Find your next rental home faster RentSlam helps you rent an apartment or house sooner by scanning 1,000+ rental websites and instantly notifying you when a new listing matches your preferences. It works throughout the Netherlands, and we’re currently expanding to Germany. Since 2016, we’ve helped over 40,000 people rent a home — and we’re just getting started. How it works: 1. Tell us what you’re looking for Set your preferences using four personal search bots — location, price, size, and more. You can adjust your criteria anytime. 2. Be the first to receive new listings You’ll get real-time alerts within 30 seconds via email, WhatsApp, or app notifications—so you can react faster than other renters. 3. Rent your new home faster By being first to respond, you’ll get more viewings and rent your next place with less stress. Join thousands of renters using RentSlam to stay ahead of the crowd and find a home faster and easier than ever.

Screenshots

Bold Smart Lock3 screens
RentSlam4 screens

Verdict

The call

The clearest difference is review sentiment: RentSlam at 100% against Bold Smart Lock's 55%. RentSlam also leads on rating (5.0 vs 4.0). Bold Smart Lock's advantage is in-app purchases (none vs 3) and ratings volume (5 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RentSlam sells 3 in-app purchases, starting at $34.99 per month. Bold Smart Lock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RentSlam holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Bold Smart Lock has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of Bold Smart Lock's written reviews are positive against 100% of RentSlam's.

UpkeepUpdate frequency

Bold Smart Lock ships an update every 3 weeks, RentSlam fortnightly. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

Scorecard6 real differences · 4 level
Bold Smart Lock versus RentSlam: the parameters behind the verdict, then further details
ParameterBold Smart LockRentSlam
PriceFreeFree
Rating4.0 (5 ratings)5.0 (1 ratings) — better
Positive reviews54.7% of reviews100.0% of reviews — better
Number of ratings5 — better1
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size57 MB60 MB
Age rating4+17+
DeveloperSesam Solutions BVRentSlam B.V.

Customer experience

Bold Smart Lock

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews53 reviews
Positive54.7%
Neutral20.8%
Negative24.5%

RentSlam

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Bold Smart Lock

No in-app purchases

3 purchases

RentSlam

Subscriptions3
  • 1 Month$34.991 Month
  • 2 Months$49.992 Months
  • 3 Months$49.993 Months

Questions

Is Bold Smart Lock free?
Bold Smart Lock is free to download, with no in-app purchases.
Is RentSlam free?
RentSlam is free to download, with in-app purchases available.
Which has better reviews, Bold Smart Lock or RentSlam?
RentSlam is rated higher. Bold Smart Lock averages 4.0 out of 5 from 5 ratings, while RentSlam averages 5.0 from 1 ratings.
Do Bold Smart Lock or RentSlam have ads?
Neither Bold Smart Lock nor RentSlam shows ads.
Which is updated more often, Bold Smart Lock or RentSlam?
Bold Smart Lock ships an update every 3 weeks, and RentSlam fortnightly. Most recently, Bold Smart Lock was updated on October 16, 2026 and RentSlam on October 2, 2026.

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