Combining Forms Dictionary vs NAPA Filters
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Combining Forms Dictionary
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This app is designed to help you study combining forms and how to form an adjective, noun or verb from combining forms. Combining form is a form of a word that can combine with free word, root word or another combining form to get a new word. For example: • -affected :to form an adjective meaning "suffering from the thing that is mentioned" flood-affected, rain-affected, famine-affected • crypto- to form a noun meaning "secret" cryptography, cryptocurrency • -afflicted: to form an adjective meaning "badly affected from the thing that is mentioned" conflict-afflicted, disease-afflicted, poverty-afflicted • -appointed: to form an adjective meaning "chosen" court-appointed, government-appointed, president-appointed • - consuming: to form an adjective meaning "using" fuel-consuming, power-consuming, time-consuming • fast- to form an adjective meaning "quick" fast-charging, fast-growing • fore- to form adjective, noun, verb meaning "before, in advance" foreboding, forecast, foretell • high- to form adjective, noun, verb meaning "far above, greater" high-flown, high-flyer, high-grade • -induced to form adjective, noun meaning "caused by" diet-induced, earthquake-induced • -infested to form adjective meaning "existing in large numbers of something unpleasant that is mentioned" alligator-infested, bacteria-infested • low - to form adjective, noun, verb meaning "below" low-class, low-grade, low-intensity • mid- to from adjective, noun meaning "middle" mid-air, mid-Atlantic, midday, midlife, mid-range • much- to form adjective meaning "greatly" much-cited, much-debated, much expected • pseudo- to form adjective, adverb, noun meaning "not genuine" pseudo-science, pseudo-secular • -prone to form adjective meaning "likely to suffer" accident-prone, corruption-prone, flood-prone • -free to form adjective meaning "without" corruption-free, stress-free, tax-free, sugar-free • vice- to form noun and adjective vice-admiral, vice president, vice captain • radio- to form adjective, noun, adverb meaning "connected with radio wave" radio-controlled, radiotherapy • -raising to form adjective and noun meaning "lifting or increasing" awareness-raising, hair-raising, fundraising and many more. If you are preparing for SAT, IELTS, TOEFL, etc, this app will greatly help you to increase your vocabulary. It also improves your reading and writing skills. Using word such as "poverty-stricken", "corruption-free", "technology-driven", "time-consuming" in your essay and be a plus. COMBINING FORMS • 229 combining forms • Each entry comes with meaning, words from that combining form • Bookmark feature • Recent entries • Advanced search WORDS • Over 1980 words • Each entry comes with sample sentences from online news SENTENCES • Over 8700 sentences STUDY • Study combining forms • Study words • Learn a unit with multiple choice quizzes • Flashcards
NAPA Filters
Easily find the right filters for your vehicle using a "Search By Vehicle" tool or a dynamic search option. You can also look up NAPA part numbers or interchange OE and competitor part numbers.
- Search by vehicle year, make, model, and engine
- Dynamic search by typing vehicle description
- Search by NAPA part number
- Interchange OE or competitor part numbers
- View product information
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Choose the classic “Search By Vehicle” lookup to search by your vehicle’s year, make, model, and engine or switch to the updated “Dynamic Search”. With the dynamic search box, you can search for your vehicle by typing part or all your vehicle’s description and selecting from the suggestion list. You can also use the dynamic search box to enter a NAPA part number to get to the product information page or enter an OE or competitor part number to interchange it to a NAPA part.
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Verdict
The clearest difference is price: NAPA Filters at Free against Combining Forms Dictionary's $0.99. NAPA Filters also leads on update cadence (monthly vs every 41 months). Combining Forms Dictionary's advantage is iOS requirement (11.0 vs 15.1). On 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
NAPA Filters is free to download; Combining Forms Dictionary costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Combining Forms Dictionary ships an update every 41 months, NAPA Filters monthly. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.
| Parameter | Combining Forms Dictionary | NAPA Filters |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 41 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 88 MB | 67 MB |
| Age rating | 4+ | 17+ |
| Developer | Trung Nguyen | Premium Guard Inc. |
In-app purchases
Combining Forms Dictionary
No in-app purchases
NAPA Filters
No in-app purchases
Questions
Is Combining Forms Dictionary free?
Is NAPA Filters free?
Do Combining Forms Dictionary or NAPA Filters have ads?
Which is updated more often, Combining Forms Dictionary or NAPA Filters?
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