permutation group vs Phrase Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
permutation group
Read full descriptionHide full description
This app represents permutation group. You can have some understanding for permutation groups, S3 and D4.
Phrase Builder
Read full descriptionHide full description
PhraseBuilder helps you understand how English sentences are built. Instead of memorizing rules, you practice sentence structure by assembling phrases from individual words. This approach trains grammar intuition and helps you think in English. How it works: • Build sentences word by word • Check your answers instantly • Practice short, clear exercises • Track completed phrases and progress PhraseBuilder is designed for beginners and for anyone who wants daily grammar practice without distractions. Clean interface, focused tasks, and no unnecessary features. Learn English sentence structure step by step.
Screenshots
Verdict
permutation group and Phrase Builder are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | permutation group | Phrase Builder |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Sungjun Kim | RIKO PARTS |
In-app purchases
permutation group
No in-app purchases
Phrase Builder
No in-app purchases
Questions
Is permutation group free?
Is Phrase Builder free?
Do permutation group or Phrase Builder have ads?
Other comparisons
