Perch Door Sim vs LETS SIGNAL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perch Door Sim
Transform your apartment's intercom experience with this smart solution. It offers a virtual intercom system, eliminating the need for hardware upgrades. Connect two devices to simulate a modern, functional intercom.
- Virtual intercom system
- No hardware needed
- Connects two devices
- Smart intercom simulation
- Apartment building solution
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Whether you live in an apartment building with an awful intercom or you manage one... we think that you should try our new smart intercom free (no hardware needed). Download Perch on one device and our Whoo Intercom App on a second device and see what your intercom ought to be.
LETS SIGNAL
Simulate realistic traffic signals and crosswalks from around the world. Customize signal timings and experience different country variations. Upgrade to unlock car traffic lights.
- Realistic crosswalk signal simulation
- 7 crosswalk signals from 4 countries
- Customizable waiting, lighting, and flashing times
- Unlock car traffic lights with premium upgrade
- Push button operation
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Play with your favorite traffic signal anytime, anywhere. Realistic crosswalk signal simulator with only push button operation. Experience 7 crosswalk signals from 4 countries. Customize waiting time, lighting time, and flashing time. Upgrading to a paid premium plan allows you to see traffic lights for cars.
Screenshots
Verdict
The clearest difference is rating: LETS SIGNAL at 4.4 against Perch Door Sim's 3.0. LETS SIGNAL also leads on update cadence (every 2 months vs every 4 months) and ratings volume (13 vs 2). Perch Door Sim's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment and device support 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
Both are free to download. LETS SIGNAL sells 1 one-off in-app purchase. Perch Door Sim asks for nothing beyond the download.
LETS SIGNAL holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: LETS SIGNAL has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Perch Door Sim ships an update every 4 months, LETS SIGNAL every 2 months. Both last shipped on October 24, 2026.
| Parameter | Perch Door Sim | LETS SIGNAL |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.4 (13 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 13 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 50 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Mnemo Corp | Masao Nakajima |
Customer experience
Perch Door Sim
LETS SIGNAL
In-app purchases
Perch Door Sim
No in-app purchases
LETS SIGNAL
- Upgrade to Premium$3.99
