GrammarBattle vs DecisionBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GrammarBattle
Engage in an RPG-style game to improve your English grammar. Battle enemies by answering grammar questions correctly, level up your character, and unlock new tenses. Track your progress and master various English grammar topics.
- RPG-style grammar battles
- Level up and collect rewards
- Unlock grammar tenses
- Boss fights with speed challenges
- Progress tracking
- Covers various English grammar topics
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Grammar Battle: Master English Through Epic RPG Fights Turn your grammar practice into an addictive RPG game. Grammar Battle makes learning English fun, effective, and action-packed. Gameplay Features - Battle enemies using grammar knowledge - Wrong answer? Lose HP — just like a real fight - Level up from 1 to 50 and collect rewards - Unlock grammar tenses as you progress - Four battle arenas: Training, Single Tense, Mixed Tenses, and elite Boss Battles - Daily Quest with 5x rewards, once per day - Boss fights with typing and speed challenges - Track progress, streaks, and grammar mastery Educational Content Grammar Battle covers 15 English grammar topics — all 12 tenses plus three advanced topics: - Present Simple, Present Continuous, Present Perfect, Present Perfect Continuous - Past Simple, Past Continuous, Past Perfect, Past Perfect Continuous - Future Simple, Future Continuous, Future Perfect, Future Perfect Continuous - Conditionals - Passive Voice - Modal Verbs Who is it for? - English language learners (intermediate to advanced) - Students preparing for language exams - Anyone wanting to improve their grammar in an entertaining way No account. No ads. Just you vs grammar. Download Grammar Battle and start your journey to becoming a grammar master!
DecisionBook
This app helps high school students navigate the US college admissions process. It provides personalized guidance on requirements, college matches, scholarships, and application tools. Explore majors, compare schools, and get expert advice for a successful application journey.
- Personalized college matching engine
- Search 5,000+ US colleges
- Major-specific guidance
- Scholarship and award finder
- Summer program and internship directory
- Expert application playbooks
- GPA projector and AP checklist
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Decision Book is the all-in-one college admissions companion built for high school students in the United States. Search any US college, explore every major they offer, and get personalized guidance on exactly what you need to get accepted — GPA, test scores, AP courses, extracurriculars, and essays. YOUR PERSONAL MATCH ENGINE Enter your GPA, SAT/ACT scores, AP courses, and state. Decision Book instantly scores every college as a Reach, Target, or Safety based on YOUR stats. Build a college list, compare schools side-by-side, and see how improving your scores changes your matches with the What-If calculator. REAL DATA, NOT GUESSWORK • Search 5,000+ US colleges powered by the College Scorecard (US Dept of Education) • See exact bachelor's programs each school offers with degree share percentages • Application deadlines (ED, EA, REA, RD) and legacy policies for 40+ top schools • AP credit policies from College Board's official database — 2,300+ schools • Median earnings 10 years after graduation and net price by family income • Campus map with Open in Maps for every school TAILORED TO YOUR MAJOR Pick a major and see specific AP courses to take, extracurriculars that matter, essay tips, clubs and competitions to join, and school-specific advice. Content adapts to each school's selectivity — what Stanford expects is different from what your state school expects. 50+ STATE SCHOLARSHIPS + 15 NATIONAL AWARDS Set your state in your profile and instantly see scholarships you qualify for — from Georgia's Zell Miller to California's Cal Grant to Florida's Bright Futures. Plus national awards like QuestBridge, Gates, Coca-Cola Scholars, and Regeneron STS. 78 SUMMER PROGRAMS & INTERNSHIPS Curated directory of the programs admissions actually recognizes — RSI, MITES, COSMOS, Clark Scholars, NASA, Google STEP, SpaceX, NIH, and more. Filter by your major, see deadlines, cost, and selectivity. 23 EXPERT PLAYBOOKS Step-by-step guides on writing your personal statement, "Why This School" essays, building your college list, financial aid (FAFSA + CSS Profile), interview prep, teacher recommendations, and more. Plus specialized guides for athletes, international students, and first-gen students. 27 APPLICATION TOOLS • GPA Projector — log courses, track unweighted + weighted GPA • AP Checklist — track all 42 AP exams, auto-syncs to your profile • AP Credit Finder — real College Board data for 2,300+ schools • Activity Compressor — 150-character Common App descriptions • Application Tracker — per-school checklist with progress bars • Compare — side-by-side stats, cost, outcomes for 2-3 schools • What-If Calculator — see how score changes affect your matches • Decision Matrix — weighted scoring for final college decisions • 20 reference tools: essay prompts, email templates, interview questions, and more ON-DEVICE AI (OPTIONAL) An on-device language model provides additional school-specific guidance. Runs entirely on your phone — no data leaves your device. Choose from three model tiers: Okay (bundled), Better, or Best (downloadable). DARK MODE + LIGHT MODE Beautiful playful design with auto, light, and dark mode support. Built for the class of 2026 and beyond. All data is stored locally on your device. No account required. No ads. No tracking. Terms & Conditions: https://sbongula.github.io/terms-of-service.html Privacy Policy: https://sbongula.github.io/privacy-policy.html Support: https://srisan.ai/support
Screenshots
Verdict
The clearest difference is rating: GrammarBattle at 5.0 against DecisionBook's 4.2. DecisionBook's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and ratings volume 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. GrammarBattle sells 2 one-off in-app purchases. DecisionBook asks for nothing beyond the download.
GrammarBattle holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 2 and 5 respectively.
GrammarBattle ships an update every 6 months, DecisionBook every 4 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | GrammarBattle | DecisionBook |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 6 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 134 MB |
| Age rating | 4+ | 4+ |
| Developer | Ivan Belov | Srisan LLC |
Customer experience
GrammarBattle
DecisionBook
In-app purchases
GrammarBattle
- Full Version$0.99
- Crystals$0.99
DecisionBook
No in-app purchases









