REBvibe vs CARLA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
REBvibe
This application calculates fundamental vibration frequencies for rolling element bearings. Users can input bearing geometry or model numbers to determine various frequencies like BPFI, BPFO, BSF, and FTF. Results are provided in both CPM and Hz, with options for selection via a manufacturing database or direct geometry input.
- Calculates BPFI, BPFO, BSF, and FTF
- Results in CPM and Hz
- Bearing selection by geometry
- Bearing selection by model number
- Uses bearing manufacturing database
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REBvibe calculates fundamental vibration frequencies of rolling element bearings. The user can specify the bearing by either bearing geometry or the bearing model number. Features: - Inner Race Ball Pass Frequency and its harmonics (BPFI) - Outer Race Ball Pass Frequency (BPFO) - Ball Spin Frequency (BSF) calculation - Fundamental Train Frequency (FTF) - Results in CPM and Hz - Bearing selection using the bearing manufacturing database - Bearing selection based on the bearing geometry Disclaimer: This App is intended for educational purposes. Although the calculations were made with great care, it may contain errors or inaccuracies. Using the results of the calculations is the sole responsibility of the user.
CARLA
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This app is the prototype of an AR learning application that is currently being developed in a research project. It provides an interactive and engaging learning experience that allows users to create and share single AR scenes and whole scenarios that can be accessed e.g., through a smartphone or tablet. The main technology behind CARLA is image-based scene recognition. It uses so called trigger images to initiate certain responses on the device being used. Currently these responses can include static images, videos, YouTube videos, short audio data, podcasts, and 3D objects. CARLA uses the concept of 'AR scenes' and 'AR scenarios' to distinguish between single AR experiences and a series of AR interactions that are logically or semantically connected. Packing scenes into scenarios enables educators to rapidly spread content to students by publishing a specific QR code generated by the app. CARLA enables teachers and students to easily create AR scenes, thus helping them to express their ideas and concepts of certain learning content: simply describe the content, take a picture for the trigger image (or select an existing one from the file browser), select a suitable AV media and automatically upload the data. The app generates a QR code to share the scene or scenario with others worldwide. A demonstration with some scenes can be found at the support URL. Just start the app, press the 'plus' sign and point the camera to a QR code on that page. After the contents have been downloaded, the image right next to the QR code triggers some audio-visual content. The app currently has several limitations, but will continuously be enhanced. Please be patient and provide some feedback via the support URL ...
Screenshots
Verdict
The clearest difference is update cadence: CARLA at every 4 months against REBvibe's every 9 months. REBvibe's advantage is iOS requirement (7.0 vs 17.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
REBvibe ships an update every 9 months, CARLA every 4 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | REBvibe | CARLA |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 7.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 6 MB | 1 MB |
| Age rating | +4 | 4+ |
| Developer | Motionics LLC | eSystems GmbH |
In-app purchases
REBvibe
No in-app purchases
CARLA
No in-app purchases
Questions
Is REBvibe free?
Is CARLA free?
Do REBvibe or CARLA have ads?
Which is updated more often, REBvibe or CARLA?
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