Util Monster vs Peep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Util Monster
This app offers a comprehensive suite of over 1,100 calculators and converters for everyday tasks. Easily calculate discounts, split expenses, convert units, find date differences, and explore loan scenarios. Customize your experience with language and appearance settings.
- 1,108 calculators and converters
- Shopping and shared cost calculations
- Unit and temperature conversions
- Date difference calculations
- Loan, savings, and BMI calculators
- Favorites and recently used tools
- 15 interface languages
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Util Monster brings together 1,108 calculators, converters and everyday tools. Check a sale price, compare measurements, count days between dates or explore a loan example in one app. Choose the tool that fits the question, enter your values and read the result alongside your inputs. SHOPPING AND SHARED COSTS Calculate a discount from the original price and percentage. For example, a price of 50,000 with a 20% discount becomes 40,000, saving 10,000 in the same currency. Use percentage calculations for other everyday comparisons. When sharing a meal or another expense, enter the total and number of people to find each person's equal share. UNITS AND TEMPERATURE Convert length, weight and temperature when a measurement uses unfamiliar units. Change inches to centimeters or compare values in different weight units. For temperature, 77°F equals 25°C. Select the units that match your task and review the converted value. DATES AND PLANS Choose a start date and an end date to calculate the time between them. For example, June 1 to July 1 is 30 days. Use the date difference for planning a trip, checking a deadline or comparing periods without counting each day yourself. LOANS, SAVINGS AND HEALTH Explore loan payment calculations with your own example figures. Check a savings goal or see how compound interest changes an example over time. A BMI calculator is also available for a general reference based on height and weight. Results depend on the values and assumptions you enter; they are general information and do not replace financial or health advice. FIND AND REUSE TOOLS Search by name or browse the categories. Add frequently used tools to Favorites and reopen tools from Recently used. Choose from 15 interface languages, adjust unit settings and select a light or dark appearance to suit how you work. The app contains ads. Some tools, including exchange-rate conversion and IP lookup, need an internet connection to retrieve information. Check the inputs, units and any assumptions shown before using a result for a decision.
Peep
This application assists users in effectively managing their time. It provides tools to organize schedules and improve productivity.
- Time management
- Schedule organization
- Productivity tools
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When your hands are busy, Peep tells you the time. Hear the current time at the interval you choose while getting ready, exercising, cooking, or doing chores. Start a focus timer when it is time to concentrate, or turn your iPhone or iPad into a clear table clock. As you use Peep's time tools, you earn EXP and watch your character grow. ■ SPEAKING CLOCK - Choose a 1, 3, 5, 10, 15, 20, 30, or 60-minute interval - Hear the current time automatically at your selected interval - See the date, seconds, and an analog clock together ■ FOCUS TIMER - Set any duration in hours, minutes, and seconds - Keep your remaining time when you switch apps or come back later - Get a notification when the timer ends - Follow progress on the Lock Screen and Dynamic Island ■ TABLE CLOCK - Rotate your device for a large, easy-to-read time and date display - Turn an iPhone or iPad into a simple desk clock ■ GROW WITH PEEP - Earn EXP by using the speaking clock, timer, and table clock - Unlock and revisit each stage of Peep as your character grows ■ SIMPLE TO START - Made for iPhone and iPad - Available in Korean and English - No account required Dynamic Island is available on supported iPhone models. Allow notifications if you want Peep to alert you when a timer ends.
Screenshots
Verdict
The clearest difference is monetization model: Peep at free against Util Monster's ad-supported. Util Monster's advantage is iOS requirement (15.0 vs 17.0). On price, review sentiment, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Util Monster ships an update every 98 months, Peep every 71 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Util Monster | Peep |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 98 months | Every 71 months — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 101 MB | 10 MB |
| Age rating | 12+ | 4+ |
| Developer | AD Lift Co., Ltd | SeokWoo Lee |
Customer experience
Util Monster
Peep
In-app purchases
Util Monster
No in-app purchases
Peep
No in-app purchases









