π Pi Challenge vs ISC 2026
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
π Pi Challenge
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An app for memorizing the digits of Pi. It supports up to 30 million digits… totally unnecessary, but fun. Comes with a ranking feature! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
ISC 2026
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Your essential guide to the 35th INTERNATIONAL SYMPOSIUM ON CHROMATOGRAPHY in Prague, Czech Republic. Stay informed with real-time updates before and during the event. Access the full congress programme, speaker details, and your own personalized schedule. Browse and view the e-posters, read the abstracts, connect with colleagues through networking - all conveniently in your pocket.
Screenshots
Verdict
The clearest difference is in-app purchases: ISC 2026 at none against π Pi Challenge's 1. ISC 2026 also leads on ads (none vs shown). π Pi Challenge's advantage is iOS requirement (13.0 vs 15.0). On price 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. π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month. ISC 2026 asks for nothing beyond the download.
| Parameter | π Pi Challenge | ISC 2026 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 73 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | SIC Company Limited | T.R.I., s.r.o. |
In-app purchases
π Pi Challenge
- Monthly Subscription$0.991 Month
ISC 2026
No in-app purchases
