Comparison

Backlog by Time Engine vs Horizon AI

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

Head to head
About

Backlog by Time Engine

Features
Read full description

Backlog is a time based todo list, add an backlog, add items and subitems to it, associate it with a time amount representing a how much it will take to be done with it. Backlog adds all your items time and show how much workload you have. Simply check and uncheck items, move them to prioritize them or delete them.

About

Horizon AI

This app helps you achieve any goal by generating a personalized, date-stamped action plan. It breaks down your objectives into manageable tasks and offers AI coaching for support. Syncs across devices and exports to your calendar.

Highlights
  • AI roadmap generation
  • Milestone and task tracking
  • AI per-task coaching
  • Calendar export
  • Home screen widget
  • iCloud sync
Features
Read full description

Horizon AI - Your Personal Goal Achievement Engine What is your mountain? Whether it's running your first marathon, launching a business, mastering a language, or landing a dream job - Horizon AI turns your goal into a complete, date-stamped action plan in seconds. HOW IT WORKS 1. Describe your goal in plain language - the more specific, the better the roadmap. 2. Choose your pace: Steady (1-2 tasks/week), Ambitious (3-5/week), or Relentless (daily, maximum compression). 3. Your AI generates a full roadmap with milestones, tasks, and target dates. 4. Check off tasks, add notes, and chat with your AI coach on any step you're stuck on. FEATURES AI Roadmap Generation Describe any goal. Get a structured plan with milestones, subtasks, and realistic deadlines - built specifically for you. Milestones & Task Tracking Every roadmap breaks into clear milestones and individual tasks. See your progress at a glance on the Overview dashboard. Ask AI - Per-Task Coach Stuck on a specific task? Tap "Ask AI" for targeted advice and guidance from your AI coach - right inside the task. Multiple AI Models - Apple Intelligence: free, private, on-device (iPhone 16+) - Claude Haiku / GPT mini: fast and efficient - Claude Sonnet / GPT-4: premium, most detailed roadmaps Calendar Export Export your entire roadmap to Apple Calendar in one tap. Every task lands on the right date automatically. Home Screen Widget Keep your top tasks front and center. Always know what's next without opening the app. iCloud Sync Your goals and progress sync instantly across all your Apple devices. 6 Languages English, Spanish, French, Japanese, Korean, and Russian. PLANS & POINTS Horizon AI uses a simple credit system so you only pay for what you use: - Free: 20 points refreshed every week - enough to generate and track goals at no cost. - Pro: 400 points per month, carry over up to 800. Unlocks all AI models. - Point Packs: one-time top-ups, available anytime. Your first roadmap is always free - no card needed. PERFECT FOR Career advancement, fitness goals, learning new skills, building a business, personal development, creative projects, and any dream worth chasing. Set your mountain. Let Horizon AI build the path. --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Backlog by Time Engine4 screens
Horizon AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Backlog by Time Engine at none against Horizon AI's 5. Backlog by Time Engine also leads on iOS requirement (16.4 vs 26.4). Horizon AI's advantage is update cadence (daily vs every 3 weeks). On price, ads and device support 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

Both are free to download. Horizon AI sells 5 in-app purchases, starting at $4.99 per month. Backlog by Time Engine asks for nothing beyond the download.

UpkeepUpdate frequency

Backlog by Time Engine ships an update every 3 weeks, Horizon AI daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Backlog by Time Engine versus Horizon AI: the parameters behind the verdict, then further details
ParameterBacklog by Time EngineHorizon AI
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 weeksDaily — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone
Requires iOS16.4 — better26.4
Further details — not scored
Size3 MB4 MB
Age rating4+4+
Developer100-8 StudioDenis Mandraburca

In-app purchases

None

Backlog by Time Engine

No in-app purchases

5 purchases

Horizon AI

Subscriptions1
  • Horizon AI Pro$4.991 Month
One-time4
  • 80 Credits$0.99
  • 200 Credits$2.99
  • 500 Credits$5.99
Show 1 more
  • 1100 Credits$9.99

Questions

Is Backlog by Time Engine free?
Backlog by Time Engine is free to download, with no in-app purchases.
Is Horizon AI free?
Horizon AI is free to download, with in-app purchases available.
Do Backlog by Time Engine or Horizon AI have ads?
Neither Backlog by Time Engine nor Horizon AI shows ads.
Which is updated more often, Backlog by Time Engine or Horizon AI?
Backlog by Time Engine ships an update every 3 weeks, and Horizon AI daily. Most recently, Backlog by Time Engine was updated on November 3, 2026 and Horizon AI on October 31, 2026.

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