Comparison

Just Start vs Yemma 4

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

Head to head
About

Just Start

This app helps individuals overcome task initiation challenges with ADHD-friendly focus sessions. It offers customizable timers, AI-powered task breakdown, virtual body doubling, and ambient soundscapes to enhance concentration and productivity.

Highlights
  • Customizable Pomodoro timers
  • AI task breakdown
  • Virtual body doubling
  • Live Activities & Dynamic Island integration
  • Lock screen widgets
  • Ambient soundscapes
  • Evolving focus garden
Features
Read full description

The task is big. Your first step doesn’t have to be. Just Start helps you begin the task you keep putting off. Describe what feels hard to start, find one small action, and take it into a short focus session. MAKE THE FIRST STEP SMALLER Ask the app’s AI for a concrete first step for your own task. Still feels like too much? Ask for a smaller action. If AI is unavailable, you can write your own step or use the timer directly. START WITH TWO OR FIVE MINUTES Begin a short session without answering a survey. Pause when you need to. Longer focus and break presets are available when you want more time. SUPPORT WHEN YOU WANT IT Choose visual timers and ambient sounds. Pro adds more sound options, mixing, and optional AI check-ins. These check-ins are automated messages, not a live person working beside you. KEEP A LITTLE MOMENTUM See your focus history and progress. Return to a recent task or use a routine for something you do regularly. Optional account sync is available; an account is not required to start. START FREE The free app includes up to three focus sessions and three AI task requests per day, core progress tools, and three ambient sounds. Pro adds unlimited focus sessions and expanded support. AI requires internet access and is subject to service limits. PRIVACY The timer and local progress work offline. When you request AI help, your task and relevant context are sent through our server to our AI provider. Optional account sync sends account and synced app data to our cloud service. Read the privacy policy before sharing sensitive task information. APP LANGUAGES Choose in Settings: English, Español, Français, Deutsch, Português, Italiano, Nederlands, 日本語, Polski, 한국어, 繁體中文, العربية, Bahasa Indonesia, हिन्दी. PRO OPTIONS Monthly: $4.99 USD. Annual: $29.99 USD billed yearly. Existing lifetime purchases remain valid and can be restored. Local prices and terms are shown before purchase. Subscriptions renew automatically unless canceled in your App Store account settings. Payment is charged to your Apple ID account at confirmation of purchase. Just Start is a productivity tool, not a diagnosis or treatment for ADHD. Privacy: https://getjuststart.app/privacy Terms: https://getjuststart.app/terms

About

Yemma 4

This AI chat app runs entirely on your iPhone, processing prompts, images, and responses locally. Enjoy private conversations, brainstorm ideas, and summarize notes offline after an initial model download. It requires specific hardware for full functionality.

Highlights
  • 100% on-device AI chat
  • No sign-up or subscription required
  • Offline functionality after model download
  • Local conversation history
  • Adjustable response style
  • Image understanding
Features
Read full description

Yemma 4 is a private AI chat app that runs entirely on your iPhone. It runs Google's Gemma 4 locally through a Swift-native MLX multimodal runtime, so your prompts, images, and responses stay on your device. There is no account to create, no cloud inference service in the middle of your conversations, and no telemetry pipeline watching what you do. Download the model once, then keep chatting on Wi-Fi, cellular, or in airplane mode. Ask questions, brainstorm ideas, rewrite text, summarize notes, describe photos, and have real back-and-forth conversations with image attachments, all processed on-device. Why Yemma 4 feels different: - 100% on-device AI chat - No sign-up, login, or subscription - Offline after the initial model download - Local conversation history you can delete any time - Adjustable response style and creativity controls - Image understanding through the same on-device model Hardware note: - Requires iPhone hardware with the A17 Pro chip or later - First model download is about 4.2 GB, so Wi-Fi and free storage are recommended

Screenshots

Just Start3 screens
Yemma 44 screens

Verdict

The call

The clearest difference is in-app purchases: Yemma 4 at none against Just Start's 3. Yemma 4 also leads on update cadence (daily vs every 11 days). Just Start's advantage is iOS requirement (15.0 vs 17.0). On price, rating, ratings volume and ads 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. Just Start sells 3 in-app purchases, starting at $7.99 per month. Yemma 4 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Just Start against 5.0 for Yemma 4. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Just Start ships an update every 11 days, Yemma 4 daily. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.

Scorecard4 real differences · 5 level
Just Start versus Yemma 4: the parameters behind the verdict, then further details
ParameterJust StartYemma 4
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 11 daysDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size85 MB28 MB
Age rating4+4+
DeveloperEstus Holdings LLCAVMIL LABS LLC

Customer experience

Just Start

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Yemma 4

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Just Start

Subscriptions2
  • Just Start Pro Monthly$7.991 Month
  • Just Start Pro Annual1 Month trial$49.991 Year
One-time1
  • Just Start Pro Lifetime$58.99
None

Yemma 4

No in-app purchases

Questions

Is Just Start free?
Just Start is free to download, with in-app purchases available.
Is Yemma 4 free?
Yemma 4 is free to download, with no in-app purchases.
Which has better reviews, Just Start or Yemma 4?
Just Start and Yemma 4 are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Just Start or Yemma 4 have ads?
Neither Just Start nor Yemma 4 shows ads.
Which is updated more often, Just Start or Yemma 4?
Just Start ships an update every 11 days, and Yemma 4 daily. Most recently, Just Start was updated on September 19, 2026 and Yemma 4 on September 15, 2026.

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