UDS vs Ai Study
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UDS
This application offers registered users access to specific information related to UDS. It serves as a portal for retrieving and viewing data within the UDS system.
- Access UDS information
- For registered users
- Information retrieval
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The UDS app provides access to the UDS information for registered users.
Ai Study
This tool helps children practice mental arithmetic with smart tracking of progress and performance. It categorizes correct and incorrect answers, monitors time spent, and provides daily topic statistics. A smart alarm clock feature is also included for reminders.
- Summarizes topic records
- Classifies correct/wrong answers
- Tracks time and correct rate
- Monitors daily topics
- Smart alarm clock reminder
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Smart Mental Arithmetic Trainer for children, the good tool help you learn maths: 1. Summarize the topic records and details, classify the correct and wrong answers. 2. Records for time-consuming, correct rate, number of topics per day. 3. Smart alarm clock reminder.
Screenshots
Verdict
The clearest difference is review sentiment: UDS at 100% against Ai Study's 0%. UDS also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (8.1 vs 10.0). On price, ads, in-app purchases and monetization model 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.
UDS ships an update every 3 weeks, Ai Study every 2 months. The most recent releases landed on August 13, 2026 and August 24, 2026 respectively.
| Parameter | UDS | Ai Study |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.1 — better | 10.0 |
| Further details — not scored | ||
| Size | 59 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Sand Apps Inc. | Vson Technology Co., Ltd |
Customer experience
UDS
Ai Study
In-app purchases
UDS
No in-app purchases
Ai Study
No in-app purchases
