Add Up Fast vs 3teneFT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Add Up Fast
Test your mental math skills with quick, timed challenges. Solve equations as fast as possible within a 15-second limit. Choose from four different game modes to improve your calculation speed.
- 15-second timed challenges
- Four game modes: Addition, Subtraction, Multiplication, Division
- Progressively difficult questions
- Tap to select the correct answer
- Boost brain power
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15 seconds of speed math to boost your brain power. The rules are simple: Tap the right answer for the equation. Players have 15 seconds to get as many questions right as possible. The questions get progressively hard as more questions appears. 4 GAME MODES: ------------------------------ 1) Addition 2) Subtraction 3) Multiplication 4) Division
3teneFT
This app uses your iPhone's facial recognition to capture eye, mouth, and orientation data. This information is then sent to a PC application in real-time to animate virtual characters with your own facial expressions.
- High-precision facial recognition
- Real-time eye and mouth movement capture
- Orientation information tracking
- Seamless integration with PC virtual YouTuber apps
- Animate VRM and Live2D models
- Control character body tilt and facial movement
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3teneFT (3tene Face Tracking) is a support app for high-precision facial recognition in the PC app for virtual YouTubers, "3tene." If you have an iPhone X or later, you can use your iPhone's facial recognition feature to capture eye and mouth movement and orientation information and send it to 3tene. This information is then reflected in real time on the body tilt and facial movement of characters (VRM, Live2D models) displayed in 3tene, enabling face tracking that can be controlled. Easily animate your favorite characters with your own facial expressions. How to Use *Network knowledge is required for connection. 1. Connect your iPhone to the same network (router) as your PC (3tene) via WiFi. 2. Enter the IP address numbers (xxx.xxx.xxx.xxx) displayed in the "System" section of 3tene's settings window and tap the connect icon to send the recognition results to 3tene. (Only the recognition results will be sent; camera images will not be sent.) 3. Change the face tracking type in 3tene's avatar adjustment window to "iPhone." 4. When you activate 3tene's face tracking, the facial information recognized by your iPhone will be reflected in your 3tene character. If your security software's firewall is enabled, communication between 3tene and 3teneFT may be blocked. If this happens, you will need to add settings to your security software to prevent 3tene from being blocked.
Screenshots
Verdict
The clearest difference is rating: Add Up Fast at 4.0 against 3teneFT's 2.4. Add Up Fast also leads on iOS requirement (9.0 vs 15.0). 3teneFT's advantage is in-app purchases (none vs 3) and update cadence (every 5 months vs every 39 months). On price, ratings volume, ads 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. Add Up Fast sells 3 one-off in-app purchases. 3teneFT asks for nothing beyond the download.
Add Up Fast holds the better App Store score, 4.0 against 2.4. Both are backed by a comparable volume of ratings — 6 and 5 respectively.
Add Up Fast ships an update every 39 months, 3teneFT every 5 months. The most recent releases landed on November 8, 2026 and November 2, 2026 respectively.
| Parameter | Add Up Fast | 3teneFT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (6 ratings) — better | 2.4 (5 ratings) |
| Positive reviews | — | 26.3% of reviews |
| Number of ratings | 6 — better | 5 |
| Update frequency | Every 39 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 66 MB |
| Age rating | +4 | 4+ |
| Developer | Arch Square | plusplus |
Customer experience
Add Up Fast
3teneFT
In-app purchases
Add Up Fast
- Pack of 250 Tokens$0.99
- Pack to Unlock All Game Modes$1.99
- Pack to Remove Ads$1.99
3teneFT
No in-app purchases









