Comparison

Button Simple vs FatigueSense

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

Head to head
About

Button Simple

Features
Read full description

Button Simple is the daily wellbeing check-in for families caring for an aging loved one. Each day, your loved one presses one button to say "I'm OK." Your family team sees it, and the people who are available follow up, the way you planned. It is the opposite of an emergency alert. Rather than waiting for something to go wrong, Button Simple turns a moment of reassurance into a daily family rhythm. The daily loop: - Press. Your loved one taps one large, friendly button, once a day. - Beacon. The press reaches your family team. - Availability. Each team member can say whether they are available. - Follow-up. The available people follow up, according to your personalized plan. You decide together, ahead of time, who answers and how, so the daily press is always met with warmth instead of uncertainty. Ideal when a loved one lives alone, and built for a team of caregivers so no one carries it alone. It turns a phone or tablet you already own into an always-on beacon. WiFi is enough, and older devices work well. Button Simple is not a medical device or an emergency service. It is a warm, respectful way for your family to stay connected, every day. Families, connected.

About

FatigueSense

This app helps you understand your energy levels and pace your daily activities to avoid crashing. It connects wearable data with daily check-ins to show the relationship between activity, recovery, and fatigue. Designed for individuals managing persistent fatigue conditions.

Highlights
  • Daily energy budget tracking
  • Early PEM risk signals
  • Track strain, recovery, HRV, RHR, sleep
  • Plan activities within energy envelope
  • Log crashes and check-ins
  • Connects with wearables or manual entry
Features
Read full description

FatigueSense helps you understand your energy and pace your days, so you can do more of what matters with less risk of crashing. Built by digital health researchers, it links data from your wearable with quick daily check-ins to show how your activity, recovery, and fatigue relate over time. It is designed with and for people living with persistent fatigue — ME/CFS, long COVID, fibromyalgia, cancer-related fatigue, and other long-term conditions. What you can do • See your daily energy budget and how much you have left • Get an early signal when you may be approaching post-exertional malaise (PEM) • Track strain, recovery, HRV, resting heart rate, and sleep in one place • Plan activities that fit within your personal energy envelope • Log crashes and check-ins so the app learns your individual patterns • Connect a wearable, or use manual daily entry — no device required Works with your wearable Apple Watch, Oura, Garmin, WHOOP, Polar, Withings, Fitbit, and more. An honest, research-led approach FatigueSense is assistive and statistical. Its outputs complement your own judgment — they do not diagnose or treat any condition, and they are not validated for every diagnosis. Fatigue is not one thing, and the app does not assume all conditions behave the same way. You know your body best. FatigueSense is a wellness and self-management app. It is not a medical device and is not intended to diagnose, treat, cure or prevent any disease. Energy estimates, pacing guidance and symptom risk indicators are informational only and are not medical advice. Always speak to a qualified healthcare professional about your health, and before changing anything about your treatment or care. If you think you are having a medical emergency, contact your local emergency services.

Screenshots

Button Simple4 screens
FatigueSense4 screens

Verdict

The call

The clearest difference is update cadence: FatigueSense at daily against Button Simple's every 4 weeks. Button Simple's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Button Simple ships an update every 4 weeks, FatigueSense daily. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Button Simple versus FatigueSense: the parameters behind the verdict, then further details
ParameterButton SimpleFatigueSense
PriceFreeFree
Rating—4.5 (42 ratings) — better
Positive reviews—82.6% of reviews
Number of ratings—42 — better
Update frequencyEvery 4 weeksDaily — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.1 — better17.0
Further details — not scored
Size55 MB49 MB
Age rating4+17+
DeveloperButton Simple LLCNana Abaogye

In-app purchases

None

Button Simple

No in-app purchases

None

FatigueSense

No in-app purchases

Questions

Is Button Simple free?
Button Simple is free to download, with no in-app purchases.
Is FatigueSense free?
FatigueSense is free to download, with no in-app purchases.
Do Button Simple or FatigueSense have ads?
Neither Button Simple nor FatigueSense shows ads.
Which is updated more often, Button Simple or FatigueSense?
Button Simple ships an update every 4 weeks, and FatigueSense daily. Most recently, Button Simple was updated on November 4, 2026 and FatigueSense on November 5, 2026.

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