Comparison

Sundee Fundee Strength vs Ferrum

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

Head to head
About

Sundee Fundee Strength

This strength training app for women adapts workouts to your menstrual cycle, energy levels, and available equipment. It offers personalized plans, progress tracking, and recovery tools, all with a focus on privacy and no advertisements.

Highlights
  • Cycle-smart workout adaptation
  • Personalized coach plans
  • Structured strength programs
  • Recovery and pain logging
  • Progress tracking (PRs, volume)
  • Private by design with local storage
Features
Read full description

Sundee Fundee is a free, private strength training app for women who lift, with workouts that adapt to your period, recovery, pain, energy, and equipment. BUILD A COACH PLAN Choose your time, focus, energy, and equipment. Sundee Fundee builds a Coach Plan with exercises, sets, reps, rest, and suggested substitutions, whether you train in a full gym, with dumbbells, with kettlebells, with resistance bands, or at home. CYCLE AND PERIOD CONTEXT Track periods, view cycle phase estimates, and get workout guidance that may adjust volume, intensity, and exercise selection based on your logged menstrual cycle and available Health data. HealthKit permissions are optional, and the app still works without Apple Health access. STRUCTURED STRENGTH PROGRAMS Follow strength programs with clear sessions and built-in progression. Use programs when you want structure, or build a one-off workout when you need flexibility. RECOVERY AND PAIN TOOLS Log pain, track recovery context, and use pain-aware exercise swaps to keep training practical. Sundee Fundee is a fitness tool, not a medical device, and it does not diagnose or treat injuries. PROGRESS TRACKING Track one-rep maxes, barbell lifts, benchmarks, PRs, weekly workouts, training volume, and challenge progress. See what is improving without digging through spreadsheets or paper notes. PRIVATE BY DESIGN Continue as a guest for local storage, or sign in with Apple to sync your workouts, maxes, cycle logs, and progress with iCloud. There are no ads and all features are free. Privacy Policy: https://sundeefundee.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ferrum

Features
Read full description

Strength training built around your cycle. Because the best athletes don't ignore their biology — they train with it. —— TRAIN WITH YOUR CYCLE, NOT DESPITE IT Your hormones are the most underused performance tool in women's fitness. Ferrum tracks your Menstrual, Follicular, Ovulatory, and Luteal phases and uses them to drive every recommendation — from load adjustments to rest guidance to when to attempt a PR. —— GUIDED WORKOUTS THAT ACTUALLY ADAPT Follow a step-by-step guided session or log freely in manual mode. Navigate exercises like a playlist — skip ahead, go back, track each set individually with different weights and reps. Your workout saves as you go, so nothing is ever lost. —— KNOW WHEN TO PUSH. KNOW WHEN TO RECOVER. Ferrum's progressive overload engine monitors your performance history and your cycle to flag peak strength windows automatically. When your body is primed for a personal best, Ferrum tells you. When it needs recovery, Ferrum tells you that too. —— BUILT FOR WOMEN WHO LIFT Not a wellness app. Not a step counter. Ferrum is a serious training tool — weekly splits, PR tracking, progress photos tied to your cycle phase, and coaching that understands your biology. Your body has a rhythm. Train like it.

Screenshots

Sundee Fundee Strength4 screens
Ferrum4 screens

Verdict

The call

The clearest difference is update cadence: Sundee Fundee Strength at every 6 days against Ferrum's every 2 months. Ferrum's advantage is iOS requirement (16.6 vs 18.0). 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

Sundee Fundee Strength ships an update every 6 days, Ferrum every 2 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
Sundee Fundee Strength versus Ferrum: the parameters behind the verdict, then further details
ParameterSundee Fundee StrengthFerrum
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.016.6 — better
Further details — not scored
Size46 MB6 MB
Age rating12+4+
DeveloperDustin OberSamer Zumot

In-app purchases

None

Sundee Fundee Strength

No in-app purchases

None

Ferrum

No in-app purchases

Questions

Is Sundee Fundee Strength free?
Sundee Fundee Strength is free to download, with no in-app purchases.
Is Ferrum free?
Ferrum is free to download, with no in-app purchases.
Do Sundee Fundee Strength or Ferrum have ads?
Neither Sundee Fundee Strength nor Ferrum shows ads.
Which is updated more often, Sundee Fundee Strength or Ferrum?
Sundee Fundee Strength ships an update every 6 days, and Ferrum every 2 months. Most recently, Sundee Fundee Strength was updated on October 16, 2026 and Ferrum on October 24, 2026.

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