# RTB LOC.id vs Perception Assist

The clearest difference is review sentiment: RTB LOC.id at 38% against Perception Assist's 0%. RTB LOC.id also leads on in-app purchases (none vs 6) and iOS requirement (14.0 vs 18.0). Perception Assist's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Perception Assist sells 6 in-app purchases, starting at $4.99 per month. RTB LOC.id asks for nothing beyond the download.

RTB LOC.id ships an update every 3 months, Perception Assist every 2 weeks. The most recent releases landed on September 13, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | RTB LOC.id | Perception Assist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/perception-assist/id6756039728/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **37.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 60 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [RTB Elektronik GmbH & Co. KG](https://appshunter.io/developer/1033533477) | [Nanjing Zutuanqu Information Science & Technology Co.,Ltd](https://appshunter.io/developer/1352887517) |

## What reviewers say

### RTB LOC.id

[App page](https://appshunter.io/ios/app/rtb-locid/id1146809656)

This mobile utility enhances daily accessibility by automatically activating acoustic signals at public transport and traffic systems. It helps users navigate their environment more easily by providing audio cues for accessibility features.

**Highlights:** Automatic acoustic signal activation, Traffic light assistance, Public transport integration, Everyday accessibility improvement, Proximity-based activation

**In-app purchases:** none


### Perception Assist

[App page](https://appshunter.io/ios/app/perception-assist/id6756039728)

This app uses AI to help blind and visually impaired users understand their surroundings. It provides voice guidance and haptic cues for outdoor risks, scene analysis, and object detection, with both on-device and cloud-assisted capabilities.

**Highlights:** Outdoor risk recognition, AI scene analysis, Automatic detection mode, Multilingual voice feedback, On-device and cloud processing, Accessible interaction design, Privacy protection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud AI Guard Monthly Plan | $4.99 | per month |
| Cloud AI Annual Protection Plan | $59.99 | per year |
| Basic Detection Pack | $0.99 | one-time |
| Temp Boost Pack | $4.99 | one-time |
| Short-Term Boost Pack | $6.99 | one-time |
| Travel Boost Pack | $129.99 | one-time |


## Frequently asked questions

### Is RTB LOC.id free?

RTB LOC.id is free to download, with no in-app purchases.

### Is Perception Assist free?

Perception Assist is free to download, with in-app purchases available.

### Do RTB LOC.id or Perception Assist have ads?

Neither RTB LOC.id nor Perception Assist shows ads.

### Which is updated more often, RTB LOC.id or Perception Assist?

RTB LOC.id ships an update every 3 months, and Perception Assist every 2 weeks. Most recently, RTB LOC.id was updated on September 13, 2026 and Perception Assist on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*