開発会社の選び方

アプリ開発会社に依頼前に聞くべき質問

アプリ開発会社を選ぶ前の実践的チェックリスト。

Sergei Gorelov CTO, Appfyl 更新日 2026-06-01

直接の答え

依頼前に、範囲、予算、設計、開発、テスト、ストア公開、コード所有権、データ保護、連絡方法、リリース後サポートを確認します。

重要ポイント

Ask about scope and assumptions before comparing prices.
Confirm code ownership, accounts, handover and support.
Check design, backend, admin, testing and store launch.
Use examples from marketplace, education, delivery, fintech and corporate apps.

Question scorecard

Area	Strong answer	Weak answer
Scope	Roles, flows, backend, admin, launch	"Everything included"
Estimate	Assumptions and change rules	One number only
QA	Devices, analytics, store tracks	Developers test alone
Ownership	Repo, code, accounts, handover	Vague ownership
Support	Post-launch period and response	New contract for everything

Questions to ask

Ask how the team turns an idea into scope, what assumptions are inside the estimate, who owns source code and accounts, how changes are handled, what you see before development, how QA works, what happens after launch, how data is protected, what similar work they can show and who communicates every week.

For a marketplace, ask about buyer, seller, admin, payments and disputes. For education, ask about content upload, progress and subscriptions. For delivery, ask about dispatcher panel, courier statuses and maps. For fintech, ask about access, audit logs and sensitive data. For corporate tools, ask about employee roles, SSO, offline mode and devices.

Appfyl portfolio examples for studio selection — Real Appfyl portfolio examples

Red flags

fixed price without role/backend questions;
unclear code ownership;
no QA owner;
store launch treated as tiny extra;
no admin or support plan;
no examples or references;
change process is vague.

アプリのアイデアがあり、次の一手を整理したいですか？

アイデアを相談する

Appfyl proof

Appfyl starts with product scope: first flow, roles, backend, admin, analytics, risks and launch. That makes proposals easier to compare and reduces surprises after signing.

Appfyl が作る範囲を公開済みプロダクトに変える流れを見る。 Appfyl の事例を見る.

次のステップ

Before signing, ask for a one-page scope summary with included work, exclusions, assumptions, change rules, ownership, testing, launch and support.

この要点を使って現実的な初期版を設計しましょう。

MVPを見積もる

開発会社の選び方

調査をローンチ計画へ

Appfyl はアイデアを、アプリの計画、最初に作る機能リスト、初回の作業計画に整理します。

アプリの計画を相談

役立つリンク

よくある質問

一番安い会社を選ぶべきですか？

価格だけでは決めない方が安全です。含まれる作業と除外される作業を比較してください。

ストアアカウントは誰が持つべきですか？

通常は事業側が重要アカウントを所有するか、明確な移管計画を持つべきです。

契約には何を入れるべきですか？

範囲、前提、支払い、変更手順、権利、コードアクセス、保守、受け入れ基準です。

Appfylは提案を比較できますか？

はい。Appfylは範囲の前提を確認し、見積もりが違う理由を説明できます。 Sources: [Clutch software developer checklist](https://clutch.co/resources/how-to-choose-a-software-developer), [Apple App Review Guidelines](https://developer.apple.com/app-store/review/guidelines/), [Android core app quality](https://developer.android.com/docs/quality-guidelines/core-app-quality), [Google Play testing tracks](https://support.google.com/googleplay/android-developer/answer/9845334), [mobile app RFP example](https://plsinfo.org/wp-content/uploads/2023/10/Mobile-App-RFP-Questions-and-Responses_2024-06-03.pdf).

実用的な質問でアプリ見積もり依頼を準備する