What is the best alternative to Grammar Fix on iPhone?

LearnEnglish Grammar (UK ed.), S tier, #1 in grammar learning.

Is there a free alternative to Grammar Fix?

Yes: LearnEnglish Grammar (UK ed.) (S tier, #1) is free to download, with in-app purchases.

Yes. 1 app ranks above it in grammar learning: LearnEnglish Grammar (UK ed.) (#1).

Grammar Fix is B tier, #2 of 6 in grammar learning. Here is everything that competes with it on iPhone, in tier order.

1
LearnEnglish Grammar (UK ed.)Shigher tier
Free + IAP · ★ 4.7 · 40,163 ratings · score 94
Free English grammar practice app with four CEFR-based levels, about 25 grammar topics and 10 activity types.
3
ConjuGato: Learn Spanish VerbsC
Free download · ★ 4.9 · 4,198 ratings · score 68
Spanish verb conjugation quiz app with spaced repetition, audio, conjugation tables, and grammar quizzes.
4
IVERBS Irregular VerbsC
Free + IAP · ★ 4.8 · 3,287 ratings · score 68
IOS app for learning English irregular verbs, with illustrations, native speaker audio, exercises, flash-cards and a.
5
German Verb ConjugatorC
Free download · ★ 4.8 · 1,954 ratings · score 67
Looks up German verb conjugations across 16 tenses for 2100 verbs, with audio, example sentences and flashcards.
6
Learn Japanese: SenseiD
Free download · ★ 4.9 · 1,872 ratings · score 53
Free Japanese grammar course with 69 lessons and exercises, based on Tae Kim's popular grammar guide.

What is the best alternative to Grammar Fix on iPhone?: LearnEnglish Grammar (UK ed.), S tier, #1 in grammar learning.
Is there a free alternative to Grammar Fix?: Yes: LearnEnglish Grammar (UK ed.) (S tier, #1) is free to download, with in-app purchases.
Does anything rank above Grammar Fix?: Yes. 1 app ranks above it in grammar learning: LearnEnglish Grammar (UK ed.) (#1).