Comparison

Otto vs Stack My Trails

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Otto

Build healthy habits and stay organized with a virtual pet companion. This app combines a planner, to-do list, and habit tracker to make self-care fun and achievable, especially for those managing ADHD. Earn rewards and watch your pet grow as you complete daily tasks.

Highlights
  • Habit tracker
  • Daily planner
  • To-do list
  • Virtual pet companion
  • ADHD support features
  • Gamified progress tracking
  • Customizable pet
Features
Read full description

Discover a new way to build and maintain healthy habits with Otto, your motivational virtual pet companion who makes healthy habits fun and achievable. Whether you’re managing ADHD or looking for a powerful habit tracker and planner, Otto helps you stay organized and motivated. Raise your adorable Otto by taking care of yourself and completing your daily to-do list! Are healthy habits hard to stick to? Looking for a fun and supportive health app to establish a self-care routine? Otto is the ultimate virtual pet and habit tracker that combines the best features of a planner, to-do list, and journal. Otto makes building and sustaining healthy habits enjoyable and straightforward while helping you achieve your goals. WHY OTTO IS THE BEST DAILY HABIT TRACKER? Start your day with personalized goals using Otto’s habit tracker and planner. Energize your virtual pet Otto for daily adventures! Stay on track with your daily to-do list and watch your healthy habits flourish. End your day with Otto by reviewing your progress and celebrating achievements. Every completed task on your to-do list helps your Otto grow, unlock rewards, and discover exciting new items along the way. UNIQUE FEATURES OF OTTO - Planner & To-Do List: Organize your day effectively with Otto’s comprehensive planner and customizable to-do list. - Habit Tracker: Build and monitor daily habits using Otto’s intuitive habit tracker, designed for all users, including those managing ADHD. - Supporting ADHD: Otto offers features like reminders, achievable goal-setting, and a fun virtual pet to keep you motivated and focused. - Explorations & Gamification: Energize your Otto to explore, discover items, and develop new attributes. - Customizable Virtual Pet: Personalize your Otto with new outfits and accessories as you complete goals on your to-do list. - Growth & Rewards: Watch your Otto grow and evolve as you use the habit tracker and complete tasks with the planner. With Otto, your planner, to do list, and habit tracker are all in one convenient app, making it easier than ever to create healthy habits and achieve your goals! Embrace the journey to wellness with Otto as your trusted companion, and transform your daily routine into an enjoyable adventure. Let’s grow together and celebrate each milestone along the way! Start your free trial and experience the full benefits of Otto on your well-being. Subscription options: $9.99/month, $29.99/year, $49.99/year, $79.99/lifetime. These prices are for United States. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before the current period ends. You can go to your iTunes Account settings to manage your subscription and turn off auto-renew. Your iTunes Account will be charged when the purchase is confirmed. If you subscribe before your free trial ends, the rest of your free trial period will be forfeited as soon as your purchase is confirmed. Privacy Policy: https://zipoapps.com/ottoios/privacy Terms of Service: https://zipoapps.com/ottoios/terms

About

Stack My Trails

Features
Read full description

Stack My Trails reads your workout routes from Apple Health and stacks them on a single map, creating a beautiful heatmap-like visualization of your training routes. You can also import and export GPX files, or draw your own GPS art directly on the map by placing waypoints. See all your runs, walks, hikes, and cycling routes layered together. Discover your favorite paths, explore patterns in your training, and turn your routes into art. Pay once, own it forever. No subscriptions, no accounts, no cloud. Your data stays on your device. KEY FEATURES - Import workout routes from Apple Health with one tap - Export and import routes as GPX files - Export and import your trail data as a backup file - Record new trails directly in the app — GPS tracking with live route display - Recorded workouts are saved to Apple Health automatically - Draw custom routes on the map — place waypoints and get real walking directions between them - Stack up to 500 routes on a single map view - Create stunning poster images with 9 artistic filters - Vignette quick-toggle: cycle off / medium / full in the poster toolbar - Adjust trail thickness, glow, labels, and decorative frames - Frame and rotate your poster for the perfect composition - Save posters to your photo library or share them - Browse all your trails in a scrollable list with preview maps - Filter by area, date range, and activity type - Show your current location on the trail map to discover new routes and unvisited directions - Built-in GPS spoofing filter for accurate route display in affected areas - Full dark mode support - No account, no subscription, no cloud YOUR DATA, YOUR DEVICE Stack My Trails stores everything locally on your device. No accounts, no servers, no tracking. Your workout data is yours. The only network requests the app makes are to Apple's geocoding service during import to convert route coordinates into place names, and to Apple's directions service when drawing routes on the map. POSTER THEMES - Noir: Dark background with glowing trails - Architect: Navy blue tones with cool light blue paths - Artistic: Pigment-ink style with curated paper palette - Clean: Pure map view with subtle trail overlay - Gradient: Trails rendered as flowing color gradients - Pixel: Retro pixel-art grid style with editable color palette - Risograph: Halftone print style with authentic ink misregistration offset - Voronoi: Geometric cell diagram - Halftone: Dot-matrix print style - Glyph: Typographic ASCII-art style REQUIREMENTS - iPhone with Apple Health workout route data - iOS 16.0 or later - Workouts must have GPS route data recorded (from Apple Watch or a GPS-enabled workout app) - Location access is used for trail recording and optionally to show your position on the map

Screenshots

Otto4 screens
Stack My Trails4 screens

Verdict

The call

The clearest difference is price: Otto at Free against Stack My Trails's $1.99. Stack My Trails's advantage is in-app purchases (none vs 14) and ads (none vs shown). On update cadence, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Otto is free to download; Stack My Trails costs $1.99 up front. Otto sells 12 in-app purchases, starting at $4.99 per month. Stack My Trails asks for nothing beyond the download.

UpkeepUpdate frequency

Otto ships an update every 5 days, Stack My Trails weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Otto versus Stack My Trails: the parameters behind the verdict, then further details
ParameterOttoStack My Trails
PriceFree — better$1.99
Rating4.8 (340 ratings) — better—
Positive reviews76.1% of reviews—
Number of ratings340 — better—
Update frequencyEvery 5 days — betterWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS16.0 — better16.4
Further details — not scored
Size145 MB61 MB
Age rating4+4+
DeveloperZipoAppsVladimir Senchikhin

Bugs and requests

Otto

Reported bugs

2 issues
  • Loading screen gets stuck
  • Subscription restoration not working

Requested features

3 requests
  • Home screen widget
  • Lock screen widget
  • Ability to edit tasks

Stack My Trails

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Otto

Subscriptions9
  • Super Otto$4.991 Month
  • Super Otto3 Days trial$4.991 Month
  • Super Otto2 variants$9.991 Month
Show 6 more
  • Super Otto3 Days trial$9.991 Month
  • Super Otto$19.991 Year
  • Super Otto7 Days trial$19.991 Year
  • Super Otto2 variants$29.991 Year
  • Super Otto7 Days trial$29.991 Year
  • Super Otto7 Days trial$49.991 Year
One-time3
  • Super Otto LifetimeFree
  • Super Otto Lifetime$9.99
  • Super Otto Lifetime$79.99
None

Stack My Trails

No in-app purchases

Questions

Is Otto free?
Otto is free to download, with in-app purchases available.
Is Stack My Trails free?
Stack My Trails costs $1.99, with no in-app purchases.
Do Otto or Stack My Trails have ads?
Otto shows ads; Stack My Trails does not.
Which is updated more often, Otto or Stack My Trails?
Otto ships an update every 5 days, and Stack My Trails weekly. Most recently, Otto was updated on October 24, 2026 and Stack My Trails on October 28, 2026.

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