Comparison

Fellow vs Sidekick

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

Head to head
About

Fellow

This AI companion offers natural, real-time voice conversations that remember your preferences. Switch between voice and text modes, and enjoy a privacy-focused experience where your audio stays on your device.

Highlights
  • Hands-free voice interaction
  • Natural, real-time replies
  • Interruptible conversations
  • Personalized memory recall
  • Voice and text modes
  • Privacy-focused audio processing
Read full description

Meet Fellow — the guide you can talk to or text anytime. Fellow is designed to feel less like an assistant and more like a supportive friend who gets to know you. Chat about your day, think something through, share what’s on your mind, or simply enjoy a little company. 1. Find the Fellow who fits you Begin at the Fellow House, where six colorful characters are waiting to meet you. Answer a few questions, explore the different floors, and choose the personality that feels right. Then give your Fellow a name and make them your own. 2. A conversation that flows Start a hands-free voice call and speak naturally — no button to hold and no rigid commands. Pause to think, change your mind, or jump in while Fellow is speaking. Your Fellow listens, responds in a warm voice, and reacts as the conversation unfolds. 3. A friend who remembers The more you chat, the better Fellow gets to know you. Share your interests, the people in your life, or what you’ve been going through, and Fellow can remember the things that matter so your conversations feel connected over time. You can view and delete saved memories whenever you want. 4. Chat is always there Message Fellow whenever you feel like talking. When you want a more natural, hands-free conversation, switch to Talk. Your text and voice conversations stay together, so you can move between them without losing the thread. 5. A character that feels alive Your Fellow is a colorful, expressive cartoon companion with their own look, personality, and voice. Watch them listen, think, gesture, and speak as you spend time together. 6. Built with privacy in mind Voice recognition and spoken replies happen on your device, so your raw voice audio is not uploaded for processing. Messages and voice transcripts are securely processed to generate replies and memories. You can begin without creating an account, and you can clear your memories or delete your data at any time. Why you’ll love Fellow: • Choose and name your own companion • Unlimited text conversations • Natural, hands-free voice calls • Interrupt and respond like a real conversation • A friend who remembers what matters to you • Expressive characters with distinct personalities and voices • On-device voice recognition and speech • Optional sign-in to keep your conversations with you Whether you want to think out loud, unwind after a long day, practice a difficult conversation, celebrate something good, or simply have someone to talk to, your Fellow is here. Come inside, meet the residents, and find your Fellow. Fellow is a guide and speaks with an AI-generated voice. It is not a human and is not a substitute for professional medical, legal, financial, or mental-health advice. If you need help, please contact a qualified professional. Privacy policy: https://trynimbo.com/privacy Terms of use: https://trynimbo.com/terms

About

Sidekick

This app acts as a personalized companion to help you build better habits and achieve your life goals. It learns your personality and provides daily, tailored guidance and accountability. Track your progress and enhance your physical and mental well-being with intelligent support.

Highlights
  • Personalized AI companion
  • Habit building plans
  • Daily guidance and check-ins
  • Personality psychology integration
  • Health and wellness tracking
  • Progress tracking
  • Apple Health integration
Features
Read full description

Grow in life and build better habits with a Sidekick who knows YOUR personality. HOW IT WORKS 1. Your Sidekick learns your goals and personality psychology 2. You get daily texts and personalized guidance help you stay on track 3. Your Sidekick's world grows as you crush your goals PERSONALIZED COMPANION Your Sidekick knows your personality psychology and remembers everything about you. It can give you advice that works for YOUR personality type, leading to science-backed personal growth ACCOUNTABILITY PARTNER Build better habits with plans based on your psychology and goals DAILY HELP Your Sidekick knows how to help you through anything and knows about your life HEALTH AND WELLNESS Stay on top of your physical and mental health with Sidekick’s cutting-edge intelligence, personalized health and wellness tracking, and optional integration with Apple Health GET ORGANIZED Keep track of your life with check-ins, progress tracking, and accurate memory SUBSCRIPTIONS Sidekick Plus (weekly or monthly) and Sidekick Max (monthly) are optional auto-renewable subscriptions. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel it in your App Store account settings. Any unused part of a free trial is forfeited when you buy a subscription. Terms of Use (EULA): https://sidekickchat.app/terms Privacy Policy: https://sidekickchat.app/privacy

Screenshots

Fellow4 screens
Sidekick3 screens

Verdict

The call

The clearest difference is in-app purchases: Sidekick at none against Fellow's 2. Sidekick also leads on review sentiment (92% vs 67%) and rating (4.8 vs 4.5). Fellow's advantage is update cadence (every 6 days vs fortnightly) and device support (3 vs 1). On price, 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. Fellow sells 2 in-app purchases, starting at $14.99 per month. Sidekick asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sidekick holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 223 and 613 respectively. Written reviews point the same way: 67% of Fellow's written reviews are positive against 92% of Sidekick's.

UpkeepUpdate frequency

Fellow ships an update every 6 days, Sidekick fortnightly. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 3 level
Fellow versus Sidekick: the parameters behind the verdict, then further details
ParameterFellowSidekick
PriceFreeFree
Rating4.5 (223 ratings)4.8 (613 ratings) — better
Positive reviews66.7% of reviews92.3% of reviews — better
Number of ratings223613 — better
Update frequencyEvery 6 days — betterFortnightly
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS26.017.2 — better
Further details — not scored
Size445 MB126 MB
Age rating12+4+
DeveloperLahta LLCCQ

Customer experience

Fellow

All ratings223 ratings
Positive86.5%
Neutral4.5%
Negative9.0%
Written reviews15 reviews
Positive66.7%
Neutral6.7%
Negative26.7%

Sidekick

All ratings606 ratings
Positive97.2%
Neutral1.3%
Negative1.5%
Written reviews65 reviews
Positive92.3%
Neutral3.1%
Negative4.6%

In-app purchases

2 purchases

Fellow

Subscriptions2
  • Monthly Subscription$14.991 Month
  • Yearly Subscription$39.991 Year
None

Sidekick

No in-app purchases

Questions

Is Fellow free?
Fellow is free to download, with in-app purchases available.
Is Sidekick free?
Sidekick is free to download, with no in-app purchases.
Which has better reviews, Fellow or Sidekick?
Sidekick is rated higher. Fellow averages 4.5 out of 5 from 223 ratings, while Sidekick averages 4.8 from 613 ratings.
Do Fellow or Sidekick have ads?
Both Fellow and Sidekick show ads.
Which is updated more often, Fellow or Sidekick?
Fellow ships an update every 6 days, and Sidekick fortnightly. Most recently, Fellow was updated on October 28, 2026 and Sidekick on October 29, 2026.

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