FitterAI vs 321GO
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
FitterAI
Read full descriptionHide full description
FitterAI is a simple and powerful workout tracker designed for CrossFit athletes and fitness enthusiasts. Log your daily WODs, track personal records, and manage your 1RM progress in one place. FitterAI helps you stay organized and focused on your training goals. Key Features: โข Log and track CrossFit WOD results โข Record 1RM for major lifts โข View workout history and progress โข Create shareable workout result cards โข Clean and easy-to-use interface Whether you are a beginner or an experienced athlete, FitterAI helps you keep track of your training and improve step by step. Start tracking smarter with FitterAI today.
321GO
Read full descriptionHide full description
CrossFit ยท ๊ธฐ๋ฅ์ฑ ํ๋ จ ยท WOD ์ด๋ ๊ธฐ๋ก์ ์์, WOD ์๋ฆผ๋ถํฐ ํ๋ ๊ธฐ๋ก, ์ปค๋ฎค๋ํฐ ํผ๋๊น์ง. WOD (์ค๋์ ์ด๋) - ๋ฐ์ค WOD ์๋ ์ ๋ฐ์ดํธ (์ง์ ๋ณ ํ์ธ) - ๋ ์ง๋ณ WOD ์กฐํ ๋ฐ ์ค์์ดํ ํ์ - WOD ๋ถ๋งํฌ ์ ์ฅ - ์ปค๋ฎค๋ํฐ ์ฒด๊ฐ ๋์ด๋ ํ์ (WOD Lv) ์ด๋ ๊ธฐ๋ก - ์ ์, ๋ ๋ฒจ(Rx/A/B/C), ์ฒด๊ฐ ๋์ด๋(1~10) ๊ธฐ๋ก - ๋ฉ๋ชจ ๋ฐ ๊ณต๊ฐ/๋น๊ณต๊ฐ ์ค์ - ์ค๋์ ํ์ดํธ๋ณด๋ ๊ธฐ๋ก ์ด๋ฏธ์ง ์๋ ์์ง ๊ฐ์ธ ๊ธฐ๋ก(PR) ๊ด๋ฆฌ - ๋ฐฑ์ค์ฟผํธ, ๋ฐ๋๋ฆฌํํธ, ๋ฒค์นํ๋ ์ค, ํด๋ฆฐ์ค์ ํฌ, ์ค๋ด์น - PR ํ์คํ ๋ฆฌ ์ถ์ AI Coach - ๋ด์ผ WOD + ๋์ ๊ธฐ๋ก + PR์ ๋ถ์ํ ๋ง์ถค ์ฝ์นญ - ์ด๋ ๊ธฐ๋ก 30๊ฐ ์ด์ ์ ํ์ฑํ ์ฐ์ ์ด๋ ์คํธ๋ฆญ - ์ฐ์ ์ถ์์ผ์ ์๋ ๊ณ์ฐ (ํด๊ด์ผ ์๋ ๊ฑด๋๋ฐ๊ธฐ) - ๋ง์ผ์คํค ๋ฌ์ฑ ์ ์ถํ ์ ๋๋ฉ์ด์ (3, 7, 10, 30, 100, 365์ผ) ์ปค๋ฎค๋ํฐ ํผ๋ - ํ์๋ค์ ์ด๋ ๊ธฐ๋ก ํ์๋ผ์ธ - ์ข์์ ๋ฐ ๋๊ธ ํ์ด๋จธ & ์นด์ดํฐ - AMRAP, For Time, EMOM, Tabata ํ์ด๋จธ - ๋ ์นด์ดํฐ ๋ฑ์ง ์์คํ - ๊พธ์คํจ, ํผํฌ๋จผ์ค, ์ปค๋ฎค๋ํฐ ์นดํ ๊ณ ๋ฆฌ๋ณ ์ ์ ๋ฑ์ง
Screenshots
Verdict
The clearest difference is iOS requirement: FitterAI at 15.1 against 321GO's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FitterAI ships an update weekly, 321GO every 4 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.
| Parameter | FitterAI | 321GO |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 4 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch โ better |
| Requires iOS | 15.1 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 29 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | SUNGHWAN PARK | Donghan Choi |
In-app purchases
FitterAI
No in-app purchases
321GO
No in-app purchases









