Subtraction Skill Builders vs Hello, Hero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subtraction Skill Builders
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Elevate your subtraction practice with Subtraction Skill Builders! Experience natural handwriting input and choose between: Math Trainer – a whiteboard to write answers at your own pace 5 fun, engaging Math mini games with adaptive difficulty With Subtraction Skill Builders you can practice and improve the following math skills: - Subtracting 1 - Subtracting 2 - Subtracting 3 - Subtracting 4 - Subtracting 5 - Subtracting 6 - Subtracting 7 - Subtracting 8 - Subtracting 9 - Subtracting 10
Hello, Hero
Explore history by conversing with famous figures and heroes from different eras. This app allows for multilingual interactions, voice chat, and customization of AI models. Save and review past conversations, and switch between light and dark modes.
- Conversations with historical figures
- Multilingual support
- Voice chat functionality
- Customizable AI models
- Persistent chat storage
- Light/dark mode
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Engage in conversations across time with historical figures, legendary heroes, opera stars, and so forth, to experience their stories firsthand. - Support any language - Support switching multiple role dialogues (click to navigate) - Support voice chat (hold to talk, playback / TTS) - Support model settings and token purchases - Support dialogue time viewing - Support dialogue content copying - Support persistent storage and reading of chat information - Support light/dark mode
Screenshots
Verdict
The clearest difference is price: Hello, Hero at Free against Subtraction Skill Builders's $2.99. Hello, Hero also leads on update cadence (weekly vs every 28 months). Subtraction Skill Builders's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 16.0). On 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
Hello, Hero is free to download; Subtraction Skill Builders costs $2.99 up front. Hello, Hero sells 3 one-off in-app purchases. Subtraction Skill Builders asks for nothing beyond the download.
Subtraction Skill Builders ships an update every 28 months, Hello, Hero weekly. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.
| Parameter | Subtraction Skill Builders | Hello, Hero |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 28 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergey Malugin | Prima Aestate LLC |
In-app purchases
Subtraction Skill Builders
No in-app purchases
Hello, Hero
- Tokens 1M$1.99
- Tokens 5M$5.99
- Tokens 10M$9.99
Questions
Is Subtraction Skill Builders free?
Is Hello, Hero free?
Do Subtraction Skill Builders or Hello, Hero have ads?
Which is updated more often, Subtraction Skill Builders or Hello, Hero?
Other comparisons
