International maths guide vs OTROTango
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
International maths guide
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IMO Grade 1 - 10 Maths Olympiad International Maths Olympiad (IMO) preparation for Grade 1 to 10 in quiz format * Students can take seven full fledged Olympiad IMO mock exams * Instantaneous results provided with detail reports.
OTROTango
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OTROTango app provides members with real-time news information, package history, attendance history, timetable, and course/package prices. Members can create profile in the app.
Screenshots
Verdict
The clearest difference is update cadence: OTROTango at monthly against International maths guide's every 46 months. 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.
International maths guide ships an update every 46 months, OTROTango monthly. The most recent releases landed on March 3, 2026 and September 15, 2026 respectively.
| Parameter | International maths guide | OTROTango |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 46 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 13 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | rahul baweja | ALGO TECH LIMITED |
In-app purchases
International maths guide
No in-app purchases
OTROTango
No in-app purchases
Questions
Is International maths guide free?
Is OTROTango free?
Do International maths guide or OTROTango have ads?
Which is updated more often, International maths guide or OTROTango?
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