iPeriodic for iPhone vs Opposite Words (Thai)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iPeriodic for iPhone
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แอพฟลิเคชั่นตารางธาตุนี้ (Periodic table) ถูกพัฒนามาเพื่อส่งเสริม และอำนวยความสะดวก ในการเรียนการสอนวิชาเคมีและผู้ที่สนใจศึกษา - สามารถดูตารางธาตุทั้งภาษาไทยและภาษาอังกฤษ - เทคนิคการท่องตารางธาตุ - ดูข้อมูลเพิ่มเติมของธาตุเพียงคลิกเดียว - เพิ่มฟังก์ชั่นการแสดงผลสถานะของธาตุ เมื่ออุณหภูมิเปลี่ยนไปตามที่กำหนด(ทั้งในภาษไทยและภาษาอังกฤษ) - เพิ่มฟังก์ชั่นพิเศษให้สามารถซื้อออฟชั่นสริมเพื่อสนับสนุนนักพัฒนา"ปิดโฆษณา" --- แอพพลิเคชั่นของคนไทย เพื่อคนไทย ---
Opposite Words (Thai)
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Opposite Words (Thai) helps you find Thai words with the opposite meaning, for Thai language homework, practising sentences or finding the right word when you write. Type a word and the app shows its opposite with the definition, the part of speech (noun, verb, adverb) and its word group, such as taste, colour and light, or actions. Made for primary and secondary school students, teachers and parents helping with homework. Examples in the app – มืด (dark) → สว่าง (bright) – ใส (clear) → ขุ่น (cloudy) – บุญ (merit) → บาป (sin) – ประหยัด (thrifty) → ฟุ่มเฟือย (extravagant) – สร้างสรรค์ (create) → ทำลาย (destroy) What you can do – Search in Thai; if nothing matches exactly, the app offers close words – Word page: the opposite, definition, part of speech and word group, with the Thai dictionary entry; some words also show the reading and English translation – Select and copy text on the word page, and listen to it read in Thai (when your phone has a Thai voice) – Share a word as a picture to LINE or other apps, in your choice of colour, square or portrait – Word of the day on the home page, a home screen widget and a daily reminder – Tap the heart to keep favourites in your library and review them later – 2 practice games: match each word with its opposite against the clock, and guess the word from its meaning – Popular words and the newest words – Articles about the Thai language All your favourites from the previous version are still there Free with ads By Wordy Guru
Screenshots
Verdict
The clearest difference is in-app purchases: Opposite Words (Thai) at none against iPeriodic for iPhone's 1. iPeriodic for iPhone's advantage is ads (none vs shown) and update cadence (every 8 days vs every 27 months). On price 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
Both are free to download. iPeriodic for iPhone sells 1 one-off in-app purchase. Opposite Words (Thai) asks for nothing beyond the download.
iPeriodic for iPhone ships an update every 8 days, Opposite Words (Thai) every 27 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | iPeriodic for iPhone | Opposite Words (Thai) |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days — better | Every 27 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 16 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Thitipong Wongsatho | Kittipong Intaboot |
In-app purchases
iPeriodic for iPhone
- Remove Ads ($0.99)$0.99
Opposite Words (Thai)
No in-app purchases
Questions
Is iPeriodic for iPhone free?
Is Opposite Words (Thai) free?
Do iPeriodic for iPhone or Opposite Words (Thai) have ads?
Which is updated more often, iPeriodic for iPhone or Opposite Words (Thai)?
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