Trajectory vs BowelLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trajectory
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Trajectory focuses on long-term direction instead of daily noise, so you can stay consistent without overreacting. TRACK YOUR WEIGHT EFFORTLESSLY • Log your weight in seconds • Supports kg and lbs • Full history STAY ON COURSE • Set a target weight and deadline • See your personal trajectory line • Know exactly where you should be today UNDERSTAND YOUR BODY • BMI tracking with instant feedback • 7-day trend to spot momentum • Progress toward your goal CLEAN & FOCUSED • No subscriptions. Free. • Beautiful chart that tells the whole story Trajectory doesn't judge. It doesn't nag. It just shows you the path, and whether you're on it.
BowelLog
Easily monitor your digestive health by logging stool types using the Bristol Stool Scale and tracking bathroom duration. Gain insights into your gut health with visual charts and patterns. Your data is kept private and stored locally on your device.
- Bristol Stool Scale logging (Types 1-7)
- Bathroom time tracking
- Optional notes for logs
- Daily and historical stats
- Streak tracking
- 7-day frequency chart
- 28-day heatmap
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Your gut health matters. But talking about it? Not so easy. Poop Tracker helps you monitor your digestive health using the Bristol Stool Scale and track your bathroom time with the salary timer. FEATURES: • Bristol Stool Scale: log Types 1-7 with descriptions and health info • Salary Counter: track how much you earn while on the throne • Optional notes for each log entry • Morning Mirror: see yesterday's stats on first open • Streak tracking with milestone celebrations INSIGHTS & TRENDS: • 7-day frequency chart and 28-day heat map • Bristol type distribution with health scoring • Weekly and monthly patterns PRIVACY FIRST: All data is stored locally on your device. No accounts required. No cloud sync. No one sees your data but you. Poop Tracker is free and ad-supported. Download now and start monitoring your gut health today.
Screenshots
Verdict
The clearest difference is device support: BowelLog at 2 against Trajectory's —. BowelLog also leads on iOS requirement (15.1 vs 18.5). On price and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Trajectory | BowelLog |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 10 days |
| Ads | — | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | — | iPhone, iPod — better |
| Requires iOS | 18.5 | 15.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 26 MB |
| Age rating | 17+ | 4+ |
| Developer | Mathieu Bonte | Blas Prieto |
In-app purchases
Trajectory
No in-app purchases
BowelLog
No in-app purchases









