Byeoldosa vs TTS Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Byeoldosa
This app offers step-by-step practice for basic arithmetic operations like addition, subtraction, multiplication, and division. It features levels organized by difficulty, from single-digit to three-digit numbers, with a vertical calculation mode that mimics writing sums on paper. Progress is automatically saved and visualized in charts to track speed and accuracy improvements.
- Step-by-step arithmetic practice
- Addition, subtraction, multiplication, division
- Difficulty levels
- Vertical (column) calculation mode
- Automatic practice set saving
- Progress charts for speed and accuracy
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Byeoldosa is an arithmetic practice app for working through addition, subtraction, multiplication, and division step by step. • Levels are organised by difficulty, so you can start from the basics and move on to more advanced problems at your own pace. • Problems range from single-digit to three-digit numbers, with stages that change depending on whether carrying or borrowing is involved. • In vertical (column) calculation mode, you can follow each column one box at a time, much like writing out the sum on paper. • Every practice set is saved automatically, and your scores and time spent are shown in simple charts, so you can see how your speed and accuracy change as you keep practising. It’s a good fit for students who want to strengthen their arithmetic, for anyone who’d like a bit of mental exercise, or for those moments when you just feel like doing a few number problems. Whenever you feel like practising numbers, just open Byeoldosa.
TTS Math
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You can easily solve math problems. Now listen to the problem aloud and solve it. You can choose and solve one of the 3 problems of addition, subtraction and multiplication to check and improve your math skills. Provides the ability to listen to and solve math problems by voice. *characteristic* - Supports three arithmetic operations: addition, subtraction, and multiplication - total number of problems - Enter the answer and check the correct answer immediately - Play the four arithmetic operations with TTS voice - Voice language: English, Japanese, Korean, German, French, Spanish - App language: English, Japanese, Korean - iPhone, iPad support - Supported from iOS/iPadOS 16.4 and later devices ** With ads ** If you have any questions while using it, please send it to junhuloveapple@gmail.com or through the inquiry form in the app.
Screenshots
Verdict
The clearest difference is ads: Byeoldosa at none against TTS Math's shown. Byeoldosa also leads on update cadence (every 6 months vs every 16 months). TTS Math's advantage is iOS requirement (16.4 vs 18.0). On price, 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.
Byeoldosa ships an update every 6 months, TTS Math every 16 months. The most recent releases landed on June 4, 2026 and September 7, 2026 respectively.
| Parameter | Byeoldosa | TTS Math |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 months — better | Every 16 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Hyekyung Jeong | kim juyoung |
In-app purchases
Byeoldosa
No in-app purchases
TTS Math
No in-app purchases









